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

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

When it's bad luck to meet a black cat?