Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

What type of tree can I carry in my hand?

Prove that the below maths equation is true.

8 + 8 = 91

When it is alive we sing, when it is dead we clap our hands. What is it?

Can you start the fire using two pieces of wood?

Find the next number in the series.
1 10 24 43 67 ?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

If 21x = 79x, what is the value of x?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?