P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What is the riddle which can be asked all day with a different correct answer each time.

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

I look at you, you look at me, I raise my right, you raise your left. What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?