John can place six large boxes or nine small boxes into a carton.
Can you find out in how many cartons can he place sixty-six boxes in total?
Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?
I am an odd number. Take away a letter and I become even. What number am I?
If 21x = 79x, what is the value of x?
Rectify the following equality 101 - 102 = 1 by moving just one digit.
You need to arrange three 7 and mathematical symbols to form number 1?
Our product and our sum always give the same answer. Who are we?
A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?
Replace the question mark with the correct number in below Picture:
Can you find out the remainder when 3^300 is divided by 5?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.