What is next number in the pattern below:

131 517 192 123 ?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

If 1+9+8=1, what is 2+8+9?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Guess the hidden movie name?