Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#2401 2011-05-26 02:59:57

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: 10 second questions


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

#2402 2011-05-26 03:44:16

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.

Offline

#2403 2011-05-26 03:48:03

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: 10 second questions

they have to be equal and they have to be cubes


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

#2404 2011-05-26 07:30:20

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi anonimnystefy;


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.

Offline

#2405 2011-05-26 16:53:17

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi anonimnystefy and bobbym,

I get the same as anonimnystefy, that is, 40 cubes. Well done!

#2924. A cube of edge 15 cm is immersed completely in a rectangular vessel containing water. If the dimensions of the base of vessel are 20 cm x 15 cm, find the rise in water level.

#2925. Three solid cubes of sides 1 cm, 6 cm, and 8 cm are melted to form a new cube. Find the surface area of the cube so formed.


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.

Offline

#2406 2011-05-27 00:20:24

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi ganesh;

How come no one is getting my answer? I asked my brother and he said 40. I am beginning to think mine is wrong. I told him that in my universe, the one I live in, the answer is 5.


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.

Offline

#2407 2011-05-27 01:01:28

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi bobbym,

I am equally perplexed to 2923. I continue....

Again, I get a different solution to 2924. I get 11.25 cm.

The solution 2925 is correct. Good work!

#2926.


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.

Offline

#2408 2011-05-27 01:25:10

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi ganesh;

I believe you are correct. My bad copying is killing me. 45 / 4 is correct not 49 / 4!!!!

Next one.


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.

Offline

#2409 2011-05-27 01:33:11

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solution 2926 is correct. Well done!

#2927. (387 x 387 + 113 x 113 + 2 x 387 x 113) = ?


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.

Offline

#2410 2011-05-27 01:41:25

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.

Offline

#2411 2011-05-27 17:44:38

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solution 2927 is correct. Well done!

#2928. If

, then what is the value of x?

#2929.


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.

Offline

#2412 2011-05-27 17:51:23

reconsideryouranswer
Member
Registered: 2011-05-11
Posts: 171

Re: 10 second questions

ganesh wrote:

(3) How many times would you have to write the number 6 when you write from 1 to 100?

----------------------------------------------------------------------------------------------




6, 16, 26, 36, 46, 56, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 76, 86, 96


Signature line:

I wish a had a more interesting signature line.

Offline

#2413 2011-05-27 17:52:44

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.

Offline

#2414 2011-05-28 00:18:30

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi,

To reconsideryouranswer : You are correct. The number of digits is apt explanation.

To bobbym : The solution 2928 is correct. Well done!

Regarding 2929, I get 2 as solution.

#2930.


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.

Offline

#2415 2011-05-28 02:37:03

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: 10 second questions

hi ganesh,


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

#2416 2011-05-28 08:07:30

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.

Offline

#2417 2011-05-28 16:46:18

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi anonimnystefy and bobbym,

The solution 2930 is perfect. Intelligent work!

#2931. Find the sum of the first 20 terms of the series

#2930. If 1.5 x = 0.04 y, then 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.

Offline

#2418 2011-05-29 00:02:44

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.

Offline

#2419 2011-05-29 00:47:50

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solutions 2929 and 2930 are correct. Smart work!

#2931.


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.

Offline

#2420 2011-05-29 00:51:08

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.

Offline

#2421 2011-05-29 01:20:25

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 48,413

Re: 10 second questions

Hi bobbym,

The solution 2931 is perfect. Brilliant!

#2932. A sum of $31,200 was divided among 100 boys and girls in such a way that each boy gets $360 and each girl $240. Find the number of girls.


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.

Offline

#2422 2011-05-29 01:35:27

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.

Offline

#2423 2011-05-29 04:55:37

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: 10 second questions

hi ganesh


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

#2424 2011-05-29 04:57:01

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,049

Re: 10 second questions

hi bobbym,


“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Offline

#2425 2011-05-29 05:03:13

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: 10 second questions

Hi anonimnystefy;

Yes! I did not see that! That reduces the question down.


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.

Offline

Board footer

Powered by FluxBB