Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Can you place six X (crosses) in below board without making three in a row in any way ?

How is a fly different from a mosquito?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

What is the next number in this series?

4,12,84,3612....

Make a sentence consisting of three words that have the whole alphabet.

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

Complete the table series riddle by finding the number that can replace "??".