I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Prove that the below maths equation is true.

8 + 8 = 91

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

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

AB * C = DE - F = GH / I

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What is harder to catch the faster you run?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

What number comes next in the series?

5 15 5 18 5 24 14 20 _