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

Two men are in a desert. They both have packs on. One of the guys is dead. The guy alive has his pack open, and the guy who is dead has his pack closed. What is in the pack?

Which number should replace the question mark?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

There is something which is always coming but never arrives?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

What is black when you buy it, red when you use it, and gray when you throw it away?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

What do you get if you add 2 to 100 four times?