Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Can you fill the blank with the correct number?

6 30 870 756030 _____

2, 3, 5, 9, 17, _ What is the next number in the sequence?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

You bought me for dinner but never eat me. What am I?

What breaks yet never falls, and what falls yet never breaks?

What is more useful when it is broken?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?