How can a man go eight days without sleep?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Which alphabet letter is a question?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

Find the hidden tiger in the given optical illusion ?

Decode below rebus
D
N
A
T
S , D

They are three errirs in this question. Can you find them?