Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

When 99 is considered higher than 100?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

If 1+9+8=1, what is 2+8+9?

What kind of storm is always in a rush?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?