Assuming the question is about 1 crore, the answer is 0.01 billion.
18
3
There is 9 1,000,000,000
One ten is a one followed by a zero; 62 tens is 62 followed by a zero, i.e 620
One face, zero vertices (corners), zero edges.
Zero. One carbon & one oxygen.
10
Zero
Zero, it has one point only.
round about zero or one
zero