What does this rebus puzzle means ?

You need to arrange three 7 and mathematical symbols to form number 1?

I cannot talk, but I always reply when spoken to. What am I?

How can a man go eight days without sleep?

How many triangles do you see in the picture puzzle below?

We know that money can be names differently for the purpose it is used for. Some of the examples of money given at following places or for following activities:

In temple = Daan
In school = Fees
During marriage = Dowry
For divorce = Alimony
Paying government = Tax
In court = Fine
Employer to employee = Salary
To kidnappers = Ransom
For illegal reason = Bribe
To civil servant retirees = Pension

Do you know what do we call the money a husband gives to his wife?

Count the number of squares in the picture below.

My location can be determined by the below rebus.
So where am i ?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?