Names for numbers: 1 followed by 48 zeroes =?

Questions

If the population of China walked past you in single file, the line would never end because of the rate of?

The words _____ & _____ are the same whether they are read left to right or right to left?

A snail can sleep for _____ years?

American Airlines saved $40,000 in 1987 by eliminating one _______ from each salad served in first-class?

How many World Championship points are awarded to a winning Grand Prix driver?