Why is a river so rich ?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

Jim has three close friends at his school: Michael, John and Alice. Two of them play football, two play basketball and two play hockey. The friend who does not play hockey does not play basketball as well. The friend who does not play football does not play hockey.

Can you identify which sport/s is played by which person?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Take one out and scratch my head, I am now black but once was red. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.