Math Is Fun Forum

Jai Ganesh

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Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#352. Find the area of the trapezium whose parallel sides are 60 m and 40m; the distance between the sides is 10m.

#353. How many 5cm long cubes can be cut from a cube whose edges are 20 cm in length?

#354. A rectangular tank can hold 650 liters of milk. If it is 130 cm long and 250 cm wide, find its height.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#355. A grocer buys eggs at 10 for $8 and sells them at 8 for $10. Find his gain or loss percentage.

#356. A map uses 3 cm to represent 25 km. If the distance between two cities on the map is 7.2 cm, how many kilometers apart are the cities?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#357. What is the middle term of

?

#358. Complete the series:- 1, -3, 9, -27, 81, ______, 729, ______.

#359. What is the sum to infinity of the series:- 1, 1/2, 1/4, 1/8, 1/16....

#360. What is the sum :- 1+2+3+......98+99+100?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#361. How many radians is 360°?

#362. What is the unit of solid angle?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#363. What is special about the number 232792560?

#364. What is special about the number 3628800?

#365. What is special about the number 1048576?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#366. A student divided a number by 2/3 when he required to multiply by 3/2. Calculate the percentage of error in his result.

#367. What is a percent of b divided by b percent of a?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#368. What is the perimeter of a semi-circle of radius 7 cm?

#369. What is the cost of painting both the interior and the exterior of a cubical box open at the top of dimensions 6cmx6cmx6cm if the cost of painting is $6 per cm²?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Kurre

Member

Registered: 2006-07-18

Posts: 280

Re: 10 second questions

Last edited by Kurre (2007-12-19 03:35:43)

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

Solutions #356 to #360.
Excellent, Kurre! All correct!!!

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#370. What is the value of Sec 45° ?

#371. What is the value of Cosec 45° ?

#372. What is the value of Cot 180° ?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#373. What is (99+1)²?

#374. What is (101-1)³?

#375. What is (1073741824)°?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JohnnyReinB

Member

Registered: 2007-10-08

Posts: 453

Re: 10 second questions

Is there any difference to them and the simpler?

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"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"

Nisi Quam Primum, Nequequam

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

Correct, JohnnyReinB!
Both the solutions are correct!
Well done!!!

#376. What is the coefficient of the middle term in

?

#377. What is the value of

?

#378. What is the value of

?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#379. What is the value of

?

#380. What is the value of

?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#381. If a, b, c are in proportion, then
(a) a² = bc    (b) b² = ac    (c) c² = ab   (d) abc = 1

#382. The least number of four digits divisible by 4, 6, 8, and 10 is _____.

#383. A bicycle was sold for $873 at a loss of 3%. What is the Cost price of the bicycle?

#384. In an examination, 96% of the candidates passed and 60 failed. How many candidates appeared?

#385. [(-107)x73 + (-107)x27] = ?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

#386. In which of the following cases the construction of triangle is possible, the lenghts of its sides being given as
(a)14 cm, 19 cm, 5 cm
(b)18 cm, 12 cm, 5 cm
(c)12 cm, 6 cm, 9 cm
(d)8 cm, 4 cm, 12 cm

#387. Two angles of a triangle are complementary. The third angle is ______________ degrees.

#388. One of the base angles os an isosceles triangle is 68°. The vertical angle is _____________° .

#389. The angles of a triangle are in the ratio 2:3:4. The largest angle is _________ degrees.

#390. Side BC of a ΔABC has been produced to a point D. If angle ACD=115° and angle A=45°, then angle B is _________° .

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JohnnyReinB

Member

Registered: 2007-10-08

Posts: 453

Re: 10 second questions

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"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"

Nisi Quam Primum, Nequequam

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

Solutions #384 and #386 to #389.
Excellent, JohnnyReinB!
All the answers are correct!!!

#391. The cost of ploughing a field at $3 per meter² is $624. If the breadth of the field is 13 meters, what is its length?

#392. The area of a rectangular park is 527 m². If its length is 31m, then what is its perimeter?

#393. The cost of flooring a room at $15 per square meter is $2700 and its length is 15 meters. What is its breadth?

#394. The ratio between two numbers is 3:4 and their sum is 84. What is the difference between the numbers?

#395. The ratio of male and female workers in a factory is 4:3. If there are 36 female workers, how many male workers work in the factory?

#396. If a:b::c:d, then
(a)ab=cd
(b)ac=bd
(c)ad=bc
(d)(bc)²=ad.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JohnnyReinB

Member

Registered: 2007-10-08

Posts: 453

Re: 10 second questions

---

"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"

Nisi Quam Primum, Nequequam

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

Very well done, JohnnyReinB!
Both the answers are correct!!!

#397. Which number is neither prime nor composite?

#398. How many prime numbers are there between 80 and 100?

#399.What is the simplest form of the fraction 69/92?

#400. The smallest number which when divided by 4, 6, 10, and 15 gives the same remainder 3 is ____.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JohnnyReinB

Member

Registered: 2007-10-08

Posts: 453

Re: 10 second questions

---

"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"

Nisi Quam Primum, Nequequam

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

Good work, JohnnyReinB!
Both the answers are correct!!!

#401. The sum of two integers is 93. If one of the integers is -59, the other is _____.

#402. A number increased by 30% gives 156. What is the number?

#403. If 70% of the students in a scool are boys and the number of girls is 504, how many boys are in the school?

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JohnnyReinB

Member

Registered: 2007-10-08

Posts: 453

Re: 10 second questions

Last edited by JohnnyReinB (2007-12-22 18:03:07)

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"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"

Nisi Quam Primum, Nequequam

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,410

Re: 10 second questions

Neat job, JohnnyReinB!
All the three answers are correct!!!

#404. What percent of 17 is 85?

$405. In an examination, 65% of the candidates passed. If the number of failures is 420, the total number of candidates who appeared for the examination is ______.

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

JohnnyReinB

Member

Registered: 2007-10-08

Posts: 453

Re: 10 second questions

---

"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted"

Nisi Quam Primum, Nequequam