Can you arrange four 9's and use at most 2 math symbols, to make the total 100?
How can I get the answer 24 by only using the numbers 8,8,3,3? You can use the main signs add, subtract multiply and divide.
A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?
All of Jacob's shoes are red except two. All of Jacob's shoes are green except two. All of Jacob's shoes are yellow except two. How many shoes does Jacob have?
Why is a river so rich ?
Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L. Can you find an "ology" that begins with a P?
Find the next number in the series? 2, 12, 36, 80, 150, 252, 392, _ ?
Find the next number in the sequence 5 12 24 36 ?
What runs around the whole yard without moving?
If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?
How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?
Jigsaw puzzles soared in popularity during the great depression, as they provided a cheap, long-lasting, recyclable form of entertainment.
