What am I?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

Replace the question mark with the correct number below.

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

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

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What 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?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

Keyboard words are not in alphabetical order, Why?

The more you take me, the more you leave me behind.
Who Am I?