Solution:

18 x 12 ÷ 2 + 3 = 111

Solution:

What

It stated 'WHAT' was the father's name.

Solution:

Throw the ball straight up in the air.

Solution:

1st person : Colin
2nd person : Rooney

They both lied.(I said at-least)
(If only one lied they would both be boys or both be girls)

Solution:

Twinkle and Rinki start on opposite sides of the river

Solution:

Bookkeeper (00 kk ee)

Solution:

Each word rhymes with its numeric position in the list. (e.g. 'gun' rhymes with 'one'
etc.)

Solution:

I have written 'your exact weight' on the paper.

Solution:

The missing number that fit in ? is 6.

The number in the middle of each triple is the same as the digits of either end's number when added together. 3+7=10=8+2 and so on.

Solution:

This is simply the numbers 2^0,2^1,2^2 ... that is 1,2,4,8,16... So for making 1000 kg we need up to 1, 2, 4, 8, 16, 32, 64, 128, and 512