what's the probability of getting a king or a queen from a pack of 52 cards?

What does this rebus mean?

O
N
C
E
TIME

Which flower has two lips?

What has one eye, but can’t see?

Can you count the number of quadrilaterals in the picture below?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Prove that twice of ten is the same as twice of eleven.

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?