Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Can you find out the number that should replace the question mark with a valid reason?

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

Can you find a number that lies one third of the distance between 1/3 and 2/3?

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

which number am I?

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

I’m tall when I’m young, and I’m short when I’m old. What am I?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

You bought me for dinner but never eat me. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?