If Rajina's daughter is my daughter's mom, who am I to Rajina?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

What does the below image rebus riddle means ?

Why is Saturday stronger than Monday?

10+10 and 11+11 can give you the same answer.

Explain how?

Can you find the hidden animal in the picture below?

Can you identify if it's a murder or a suicide ?