What is the Surname of Barbie Doll?

It is always ahead of me yet I can never see it. What is it?

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?

If you say my name, I will no longer exist. What am I?

Prove that twice of ten is the same as twice of eleven.

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

I shave every day, but my beard stays the same. What am I?

What is red and smells like blue paint?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?