What has many keys but can’t open a single lock?

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

which number am I?

People put me on the table and cut me but do not eat me. What am I?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

Keyboard words are not in alphabetical order, Why?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Using Only Five 5's and any mathematical operator make sum as 37