Find the next number in the sequence

5 12 24 36 ?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

John is the son of Jacob.
So,
Jacob is the_____of John's father?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Three people check into a hotel. They pay $60 for the rent of the room. After they check-in, the manager realize that the rent for the room is $55. So, he gives $5 to the bellboy and asks him to give it to them. The bellboy thinks that it will be difficult for the three people to share $5 among them and seeking the personal benefit, he pockets $2 and gives the remaining $3 to them.

Now, each person paid $20 and got back $1. In this manner, each of them paid just $19 which totals to the amount of $57. The bellboy has $2 with him and adding them, we get $59. So where is the remaining $1?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you find out the remainder when 3^300 is divided by 5?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

I have an eye but still cannot see.

Who am I?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?