With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

How many triangles are there in the picture below?

What does an Island and the letter T have in common?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

I have feet, but no legs. Which animal Am I?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?