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#501 2008-01-02 22:49:55

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

Answer to #526.
Correct. Well done, JohnnyReinB!


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.

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#502 2008-01-02 23:58:36

Jai Ganesh
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Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#541. If (sinx-cosx)² = 1/2, then the value of (sinx+cosx)² is equal to ________________.

#542. The angle whose sine is -1/2 is ____________ degrees (minimum value).

#543. What is the value of sin 330°?

#544. In a circle of radius r, AB and CD are two perpendicular diameters. What is the length of the chord BC?


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.

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#503 2008-01-04 02:26:30

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#545. What is the last digit of

?


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.

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#504 2008-01-04 23:44:46

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#546. The price of an item is first increased by 40% and then decreased by 12%. What is the final price compared to the original price?


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.

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#505 2008-01-04 23:56:19

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#547. A man does not want to change his expenditure for consumption of sugar. If the price of sugar goes up by 60%, then how much should he reduce the consumption?

#548. X's salary is half that of Y's. If X got a 50% rise in his salary and Y got a 25% rise in his salary, then what is the percentage increase in the combined salaries of both?


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.

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#506 2008-01-05 00:10:33

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" wink

Nisi Quam Primum, Nequequam

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#507 2008-01-05 00:18:58

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

Correct, JohnnyReinB! Very good!!!

#549. If a set A has five elements and set b has ten elements, then how many elements has their cartesian product have?


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.

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#508 2008-01-05 00:23:39

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#550. What is the value of

?


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.

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#509 2008-01-05 00:26:44

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#551. What is the value of

?


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.

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#510 2008-01-05 00:31:02

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#552. What is the value of

?


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.

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#511 2008-01-05 02:32:34

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#553. What is 2+4+6+8+....50?


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.

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#512 2008-01-05 02:50:46

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#554. The surface area of two spheres are in the ratio 25:36. What is the ratio of their volumes?

#555. Surface area of a sphere is 600 cm². What is the total surface area of a hemisphere of the same radius?


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.

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#513 2008-01-05 16:06:53

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" wink

Nisi Quam Primum, Nequequam

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#514 2008-01-05 18:37:17

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

No, you aren't correct, JohnnyReinB!


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.

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#515 2008-01-05 18:53:19

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#556. If (x-1) is a factor of 3x²-2x-p, then what is the value of m?

#557. The Greatest common divisor of x²-4 and x+2 is ______________.


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.

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#516 2008-01-05 18:56:54

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" wink

Nisi Quam Primum, Nequequam

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#517 2008-01-05 19:13:18

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

Answer to #555.
Well done!

#558. If b²-4ac=0 in an equation ax²+bx+x=0, then what can be said about the roots?

#559. The equation whose roots are 2+√3 and 2-√3 is _____________________-.


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.

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#518 2008-01-05 23:22:35

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#560. If the ratio of altitudes of two similar triangles is 4:5, then what is the ratio of their areas?

#561. The corresponding sides of two similar triangles are in the ratio a:b. What is the ratio of their areas?


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.

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#519 2008-01-06 02:44:55

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#562. If 3x+2 is a factor of p(x), then
(a)p(2/3)=0  (b) p(3/2)=0  (c). p(-2/3)=0   (d)p(-3/2)=0.

#563. If p(x) = 5x²+3x-1 and p(-1/2)=0, then by factor theorem, the corresponding factor of p(x) is ___________________.


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.

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#520 2008-01-06 08:36:52

MasterofDisguise
Member
Registered: 2008-01-05
Posts: 68

Re: 10 second questions

ganesh wrote:

#496. How many squares does picture 1 contain?

#497. How many rectangles does picture 1 contain?

#498. How many triangles does picture 2 contain?

#496

Last edited by MasterofDisguise (2008-01-06 13:25:04)


(im an ALIEN eek) im kool tongue (WHAT what You cant steal my fridge!)]

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#521 2008-01-06 08:38:30

MasterofDisguise
Member
Registered: 2008-01-05
Posts: 68

Re: 10 second questions

ganesh wrote:

#496. How many squares does picture 1 contain?

#497. How many rectangles does picture 1 contain?

#498. How many triangles does picture 2 contain?

#497

Last edited by MasterofDisguise (2008-01-06 13:22:12)


(im an ALIEN eek) im kool tongue (WHAT what You cant steal my fridge!)]

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#522 2008-01-06 08:43:07

MasterofDisguise
Member
Registered: 2008-01-05
Posts: 68

Re: 10 second questions

ganesh wrote:

#502 and #503. What are these figures called?

#502

Last edited by MasterofDisguise (2008-01-06 13:21:35)


(im an ALIEN eek) im kool tongue (WHAT what You cant steal my fridge!)]

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#523 2008-01-07 01:50:59

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

Answer to #496 is correct! Well done, MasterofDisguise!!!
Keep it up!


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.

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#524 2008-01-07 01:57:02

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 46,395

Re: 10 second questions

#564. What is the value of

?

#565. What is the value of

?


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.

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#525 2008-01-07 02:06:13

MasterofDisguise
Member
Registered: 2008-01-05
Posts: 68

Re: 10 second questions

was my answer to 502 or 497 right?


(im an ALIEN eek) im kool tongue (WHAT what You cant steal my fridge!)]

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