Can you solve the below algebraic mathematical equation?

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

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Count the number of triangles in the given picture.

A B C D E F G H

These are the letters given to you. Now you have to find out the letter that comes two to the right of the letter which is immediately to the left of the letter that comes three to the right of the letter that comes midway between the letter two to the left of the letter C and the letter immediately to the right of the letter F.

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Can you start the fire using two pieces of wood?