Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

If,

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

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

D + F = ?

Why is the Hole below a Lock?

What has 88 keys?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

Which is faster, Heat or Cold ? Explain.

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What do you get if you add 2 to 100 four times?