What is the next shape from answers A, B, C, and D figure?

I add 5 to 9 and get 2. The answer is correct, so what am I?

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

I travel all around the world but always stay in the corner. What am I?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you place six X (crosses) in below board without making three in a row in any way ?

In which direction should the missing arrow point?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?