Why 1729 is a magic number? Answer Logically.

Out of four images which one is the odd one out?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

I have eight fingers and two thumbs but I do not live. What Am I?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

I look at you, you look at me I raise my right, you raise your left. What am I?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

How many words can a pen with half refill write?