What occurs twice in a week, once in a year but never in a day?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

You need to move three matchsticks to form three squares. Can you do it?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

How could a baby fall out of a twenty-story building onto the ground and live?

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?

A man dies of old age on his 25 birthday. How is this possible?

Replace the question mark with the correct number in below Picture:

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?