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

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?

Next Number in the Series,

5, 16, 49, 104, ?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

What is the next number in this matchsticks series riddle?

Can you count the number of triangles in the given figure?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

The centre of the third figure is empty. What digit should fit inside?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?