By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

What can go up a chimney down, but can’t go down a chimney up?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

How is a fly different from a mosquito?