Can you solve the below algebraic mathematical equation?

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

I have teeth but i don't bite. Who Am I ?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Can you tell a 3D object that has just two surfaces?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

A man dies of old age on his 25 birthday. How is this possible?