Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

No matter how little or how much you use me, you change me every month. What am I?

What word is represented by this rebus?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What is harder to catch the faster you run?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

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.