A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Count the number of triangles in the below picture?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

How can a man go eight days without sleep?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?