"Math Riddles"

Nails and Feathers

If you have a pound of nails and a pound of feathers which one weighs more?

A:
There weigh the same because there both are a pound.

How Many Siblings?

Mary has six brothers and five sisters. Yet, together they are 12 siblings.  How so?

A:
Including Mary, they are 12. Otheriwse, they are 11. 6 brothers + 5 sisters + 1 Mary = 12 siblings.

One Through Nine

How can you make 100 using the numbers 1 to 9 only once each?

A:
9*8+7+6+5+4+3+2+1 = 100

Five Zeros

How can you make 120 using  five zeros?

A:
(0!+0!+0!+0!+0!)! = 120
Check a calculator to verify!

Crayons in a box

There is a mixture of purple, orange, and yellow crayons in a crayon box. The total number of crayons is 60, there are four times as many orange crayons as yellow crayons. There are also 6 more purple crayons than orange crayons. How many crayons of each color are there?

A:
there are 30 purple crayons,24 orange crayons and 6 yellow crayons.

More Money

would you have more money with a million dollars today or a penny today and double your money every day for 31 days?

A:
double your money every day for 31 days

Bus Driver

Your driving a bus there are 25 people in the at the first stop 12 get off and 4 get on at the 2nd stop 10 get off and 14 get on 3rd stop 6 get off and 9 get on 4th stop 12 get off and 7 get on at the last stop 3 get on and 5get off. What is the bus drivers last name?

A:
What ever your last name is cuase you were the bus driver

Chocolate Machines

There are ten chocolate machines numbering 1 throgh 10 and each producing chocolate bars that weigh 1kg. However, there is a faulty machine which is producing 0.1kg more per bar than it should be.

There is one scale in the room that can only be used once to weigh the chocolate bars although a number of combinations is allowed.

How can you identify which machine is faulty?

A:
Put one bar from the first machine on the scale, take two from the second machine, take three from the thrid machine, take four from the fourth machine and so one until such time that you have taken 10 from the 10th machine and placed them on the scale. Depending on which machine is faulty will be determined by the number reflected in the decimal column of your scale. For example -- if the thrid machine is faulty the final number will show 55.3kg's; if the seventh machine is faulty the final number will show 55.7kg's.

Crack me up

you have 7 crackers on the table and you take away three of them. How many crackers do you now have?

A:
3- you took three of them

30 Cents

How can you make 30 cents out of two coins. One of the coins can not be a quarter.

A:
A quarter and a nickel. Only ONE of the coins cannot be a quarter but a nickel is not a quarter.
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