In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

What has 13 hearts but no other organs?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

2, 3, 5, 9, 17, _ What is the next number in the sequence?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?