Math Is Fun Forum

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Very well done, pi man!

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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.

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: 10 second questions

I’m not very sure of my answer but that was what I got.

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: 10 second questions

You've done a lot more than you needed to there. The question just asked how many times there would be that angle, not at what time it occurred.

The answer is just

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Why did the vector cross the road?
It wanted to be normal.

JaneFairfax

Member

Registered: 2007-02-23

Posts: 6,868

Re: 10 second questions

Oh geez, I misread the question.

lightning

Real Member

Registered: 2007-02-26

Posts: 2,060

Re: 10 second questions

i got one i have two pounds but i lost three pounds but not my two pounds how is this possible

quite tricky so i will give you thirty secs

Last edited by lightning (2007-03-06 09:00:19)

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Zappzter - New IM app! Unsure of which room to join? "ZNU" is made to help new users. c:

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: 10 second questions

You used the 2 pounds to buy a weight-loss drink.

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Why did the vector cross the road?
It wanted to be normal.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Quite right, mathsyperson!
Excellent!

159. Which is the samllest number which leaves a remainder of 1 when divided by 2, 4, 6, 8, 10, and 12?

160. Which is the number between 1 and 100 which has the greatest number of distinct prime factors?

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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.

pi man

Member

Registered: 2006-07-06

Posts: 251

Re: 10 second questions

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Absolutely right, outstanding work, pi man!

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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.

Dross

Member

Registered: 2006-08-24

Posts: 325

Re: 10 second questions

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Bad speling makes me [sic]

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: 10 second questions

I agree with Dross, but just to

a bit...

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Why did the vector cross the road?
It wanted to be normal.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Well done, Dross and mathsyperson!!!

161. No perfect tenth power or twentieth power of a natural number contains 6 digits. True of False?

162. How is 3628800 an important number to mathematicians?

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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.

lightning

Real Member

Registered: 2007-02-26

Posts: 2,060

Re: 10 second questions

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Zappzter - New IM app! Unsure of which room to join? "ZNU" is made to help new users. c:

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

lightning,
Can you give a counter-example for 161?

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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.

lightning

Real Member

Registered: 2007-02-26

Posts: 2,060

Re: 10 second questions

sorry i geused

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Zappzter - New IM app! Unsure of which room to join? "ZNU" is made to help new users. c:

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Guessing isn't wrong, but guessing wrongly 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.

mathsyperson

Moderator

Registered: 2005-06-22

Posts: 4,900

Re: 10 second questions

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Why did the vector cross the road?
It wanted to be normal.

lightning

Real Member

Registered: 2007-02-26

Posts: 2,060

Re: 10 second questions

Guessing isn't wrong, but guessing wrongly is!!!

told you your funny

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Zappzter - New IM app! Unsure of which room to join? "ZNU" is made to help new users. c:

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Well done, mathsyperson!

163. A rectangular block of ice measures 40 cm by 25 cm by 16 cm. Calculate its mass in kilograms if 1 cubic centimetre weighs 0.9 grams.

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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: 48,387

Re: 10 second questions

164. What is the value of x if x% of 24 is 64?

165. 3/8 as percent is_______________.

166. An ore contains 8% of Copper. How many kilograms of the ore is required to get 68 kilograms of copper?

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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: 48,387

Re: 10 second questions

167. A NUMBER INCREASED BY 37.5% GIVES 33. WHAT IS THE NUMBER?

168. Which is the greatest among 33 1/3%, 4/15 and 0.35?

169. A fruit seller had some aplles. He sells 40% of the apples and has 420 apples remaining. How many apples did he have in the beginning?

170. What will be 80% of a number whose 200% is 90?

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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.

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: 10 second questions

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igloo myrtilles fourmis

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,387

Re: 10 second questions

Very well done, John E. Franklin!
I thought #168 was the easiest of the lot!

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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: 48,387

Re: 10 second questions

171. The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?

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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.

Identity

Member

Registered: 2007-04-18

Posts: 934

Re: 10 second questions

171. The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?

Probably took about 15 seconds, need to work on mental arithmetic =_=

Last edited by Identity (2007-06-04 03:36:28)