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 ?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

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

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?