Count the number of lines in the image below ?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Why is it very easy to weigh a fish?

Find the missing letter in the last circle logically in the given below picture.

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Prove that the below maths equation is true.

8 + 8 = 91