I make two people out of one. What am I?

Can you count the number of squares in the figure below?

If 21x = 79x, what is the value of x?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

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

ST ND RD TH '?'

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

John's five friends Rachel, Jacob, Phoebe, Joey and Chandler live on the same road.

Rachel lives in the house: A, Jacob lives in the house: B, Phoebe lives in the house: C, Joey lives in the house:D, Chandler lives in the house: E

Mathematically
B*C*D = 1260
B + C + D = 2E
2A = E

The road numbers run from 2 to 222.

Can you tell me the house number of each of John's friends?