Spot what is wrong here in below Picture?

Can you spot the hidden girl in the picture below?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

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.

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Count the number of triangles in the picture below:

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?