When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

What always comes into a house through the keyhole?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Spot what is wrong here in below Picture?