You can see it everyday, But cannot touch it at will. What is it?

Find the next number in the sequence

5 12 24 36 ?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

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

Can you find the key in the picture below?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

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?

Replace the question mark with the correct number.

The cream is heavier than Milk. True or False?