# Math riddles with simple answers

## Lucky number

Think of a number. Double it. Add ten. Half it. Take away the number you started with. What is your number?
78.06 %

## The largest number you can write

What is the largest number you can write with just 3 digits?
999.
78.03 %

## Six letters

There is a word and six letters it contains. Take one away and twelve is what remains. What word is it?
Dozens.
77.98 %

## A hiking group are on a five day expedition

On the first day they cover one quarter of the total distance. The next day they cover one quarter of what is left. The following day they cover two fifths of the remainder and on the fourth day half of the remaining distance. The group now have 14 miles left, how many miles have they walked?
68.962962 miles
77.17 %

## 2 numbers

Divide 110 into two parts so that one will be 150 percent of the other. What are the 2 numbers?
44 and 66.
77.17 %

## Infinite number of mathematicians

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?
Just one.
77.17 %

## Hards maths number

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So I can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits.
41312432.
76.89 %

## Volume of the pizza

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?
pi * z * z * a
76.68 %

## Odd number

I am an odd number; take away a letter and I become even. What number am I?
7.
76.54 %