Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Can you move 2 matchsticks to form four equal sized squares.

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What does an Island and the letter T have in common?

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

Can you find the number?

You need to remove two matchsticks to make the below equation true. Can you do it ?