Math Is Fun Forum

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2801 and 2802 are perfect. Very well done!

#2803.

#2804.

(Approximate solutions accepted)

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2803 and 2804 are correct. Good work!

#2805. If 2*3 = square root of 13, and 3*4 = 5, then what is the value of 5*12?

#2806. Which is the least perfect square number divisible by 3, 4, 5, 6, and 8?

---

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.

Howardroark

Member

Registered: 2010-10-10

Posts: 382

Re: 10 second questions

Hi ganesh,

---

I come from a civilization which has given the world the number 0..

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi Howardroark and bobbym,

The solution to 2806 is correct. Well done!

#2807. The sum of three consecutive numbers is 87. Which of these three is greatest?

#2808. Three times the first of three consecutive odd integers is 3 more than twice the third. Which is the third integer?

(the solution to 2805 is 13)

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Howardroark

Member

Registered: 2010-10-10

Posts: 382

Re: 10 second questions

Hi ganesh,

---

I come from a civilization which has given the world the number 0..

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym and Howardroark,

Howardroark : Both correct, Good work!

bobbym : 2807 correct, 2808: The solution is 15, not 11.

#2809. The sum of three consecutive multiples of 3 is 72. Which is the largest?

#2810. What is the sum of two consecutive even numbers, the difference of whose squares is 84?

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2809 and 2810 are perfect. Good work!

#2811. The sum of four consecutive even integers is 1284. Which is the greatest of them?

#2812. The sum of the squares of three consecutive natural numbers is 2030. What is the middle number?

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Howardroark

Member

Registered: 2010-10-10

Posts: 382

Re: 10 second questions

Hi ganesh,

---

I come from a civilization which has given the world the number 0..

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym and Howardroark,

The solutions 2811 and 2812 are perfect. Brilliant!

#2813. The product of two numbers is 9375 and the quotient, when the larger one is divided by the smaller,  is 15. Find the sum of the numbers.

#2814. The sum of two numbers is 40 and their product is 375. What would be the sum of their reciprocals?

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2813 and 2814 are correct. Smart work!

#2815. The product of two numbers is 120 and the sum of their squares is 289. What is the sum of the numbers?

#2816. The product of two numbers is 45 and the sum of their squares is 106. What are the numbers?

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2815 and 2816 are on the dot. Excellent!

#2817. The difference between two positive integers is 3. If the sum of their squares is 369, then what is the sum of the numbers?

#2818. If the sum of two numbers is 22 and the sum of their squares is 404, then what is the product of the numbers?

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi ganesh;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2817 and 2818 are perfect. Good work!

#2819. The difference between the squares of two numbers is 256000 and the sum of the numbers is 1000. What are the numbers?

#2820. If the difference of two numbers is 3 and the difference of their squares is 39, then which is the larger number?

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2819 and 2820 are correct. Magnificent!

#2821. In a two-digit number, the digit in the unit's placeis four times the digit in ten's place and the sum of the digits is equal to 10. What is the number?

#2822. A number of two digits has 3 for its unit's digit, and the sum of digits is

of the number itself. Find the number.

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2821 and 2822 are correct. Brilliant!

#2823. A number consists of two digits. If the digits interchage places and the new number is added to the original number, then the resulting number is divisible by what number?

#2824, The sum of the digits of a two-digit number is 9 less than the number. Which of the following digits is at unit's place of the number?
(a) 1
(b) 2
(c) 4
(d) Data inadequate

---

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.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: 10 second questions

Hi;

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.