When it's bad luck to meet a black cat?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

what's the probability of getting a king or a queen from a pack of 52 cards?

Count the number of squares in the picture below.

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

What demands an answer, but asks no questions

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

The more of this there is, the less you see. What is it?