What number comes next in the series?

5 15 5 18 5 24 14 20 _

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

Can you write down eight eights so that they add up to one thousand?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

What will you call your mother's brother's brother-in-law?

What has one letter and starts with an E?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?