Math Riddles

I am an odd number. Take away one letter, and I become even. What number am I?

• Seven

• Nine

• Eleven

• Thirteen

The more you take, the more you leave behind. What am I?

• Time

• Footsteps

• Numbers

• Shadows

If two’s company and three’s a crowd, what are four and five?

• Trouble

• Nine

• Ten

• A group

I add five to nine and get two. The answer is correct, but how?

• It’s a clock (9 + 5 = 14, which is 2 on a clock)

• It’s magic

• It’s incorrect

• It’s a trick question

What three positive numbers give the same result when multiplied and added together?

• 1, 2, 4

• 2, 3, 5

• 1, 2, 3

• 3, 3, 3

I am a number. Multiply me by any number, and the answer remains the same. What am I?

• 1

• 0

• 10

• Infinity

What comes once in a minute, twice in a moment, but never in a thousand years?

• The letter 'M'

• The number 1

• A second

• A shadow

When you divide 30 by half and add 10, what do you get?

• 70

• 25

• 30

• 50

A farmer has 17 sheep and all but 9 run away. How many sheep does he have left?

• 0

• 9

• 8

• 17

What number goes up but never comes down?

• Your age

• Temperature

• A balloon

• A countdown