Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

I am sure no one can have two things for dinner. what are they?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

What does below chemistry rebus means?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

How could a baby fall out of a twenty-story building onto the ground and live?

What number comes next in this sequence:
7 8 5 5 3 4 4 _