I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you solve the maths in the below-given picture equation?

The centre of the third figure is empty. What digit should fit inside?

What do you call a fish without an eye?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

I am an odd number. Take away a letter and I become even. What number am I?

Solve the equation in the image by looking at the pattern closely.

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?