If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Can you count the number of blocks in the picture below?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

10+10 and 11+11 can give you the same answer.

Explain how?

If we change the South-East direction into North and North-East into West and all others similarly.
Can you find out which direction will be in the place of South-West direction?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Why 1729 is a magic number? Answer Logically.

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Forwards I am heavy, backward I am not. What am I?