If two's company, and three's a crowd, then whats four and five ?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

What do you see in the image below

What do you answer even though it never asks you questions?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

10+10 and 11+11 can give you the same answer.

Explain how?