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

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What does below pictogram mean?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

What is black when you buy it, red when you use it, and gray when you throw it away?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?