10
Five. Zeros in between significant digits are significant and trailing zeros that are after the decimal are significant.
963
3. Captured zeros (zeros between two other significantnumbers) are always significant.
There should be two zeros. * * * * * If you mean 1*2*3*...*99*100m then there will be 24 zeros at the end.
There are 1000 of them.
1001
10
Two millennia and one year.
Between the two numbers there are 789 zeros.
One
One. The zeros are just placeholders.
Seventeen.Seventeen.Seventeen.Seventeen.
Five. Zeros in between significant digits are significant and trailing zeros that are after the decimal are significant.
963
38894
5080