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?

What is more useful when it is broken?

Why is the Hole below a Lock?

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

Decode below rebus
D
N
A
T
S , D

What is full of holes but still holds water?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?