I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Can you find out which number multiplied by itself will give the output as 12345678987654321?

John, a 5-year-old boy, was really fond of the chocolates. He asked his Mother to give him some money to buy his favourite chocolates. His Mother gave him $45. He went to the shopkeeper and asked, "How much is one chocolate for?". The shopkeeper said $3 for one chocolate. Also, if you give me the wrappers of three chocolates, I will give you one for the exchange.
In total, how much chocolate could John eat?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

Remove two matchsticks to make the below equation correct.

What has a ring but no finger?

How many times do a clock's hands overlap in a day ?