What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Decode the below four famous ciphers:

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

Find the missing letter in the last circle logically in the given below picture.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

How can one talk without saying a single word?