What is wrong in the below Picture?

Find out the number of circles in the given picture having Illusion

If,

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

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

D + F = ?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What runs around the whole yard without moving?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

If you say my name, I will no longer exist. What am I?