A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Solve the maths equation in the picture below by placing the numbers 1 through 9 into the boxes so that all the 3 equations are correct.

What month of the year has 28 days?

How many Watermelons are there in the below picture?

What does this rebus mean?

O
N
C
E
TIME

By adding four matchsticks, can you divide the square shown in the picture into two equal parts?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

How many times do a clock's hands overlap in a day ?

I have Rs.50 and I spend it in the way as below.

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?