Count the number of lines in the image below ?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

In which direction should the missing arrow point?

Which number comes next in the number series?

2, 9, 30, 93, ?

Replace the question mark in the picture below.

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

By using 'because' continuously three times, can you make an English statement ?

Find the next number in the series below.

6 18 270 72090 ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?