How is a fly different from a mosquito?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What 5-letter word typed in all capital letters can be read the same upside down?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Using eight eights and addition only, can you make 1000?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?