Which of the below owl is odd one out?

Can you place three balls such that the equation shown in the picture holds true?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

Can you find a rabbit in the given picture?

Find out the missing number in the picture attached:

What is the word or phrase?

You need to arrange three 7 and mathematical symbols to form number 1?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

What is the Surname of Barbie Doll?