I am an odd number. Take away a letter and I become even. What number am I?

How can you tell a raw egg from a hard-boiled egg?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Can you quickly find which two matchstick figures are identical?

Five teams were competing in cricket where they faced each other exactly once. After the tournament, the following is the point table.

DareDevils 6
SuperKings 5
Royals 4
Sunrisers 2
Riders ?

How many points did Riders end up with?

How do you go from 98 to 720 using just one letter?