2.7182818284
The value of Pi is 3.14159, but the first 10 digits are 3.141592658
3.14159 2.71828
for (first=n; first>=10; first/=10);
I believe they are 3.1415926535
This is a computer's method of representing scientific numbers. The 'e' or 'E' means exponential and represents the "× 10" in the normal scientific representation. The digits before the 'e' are the mantissa; The digits after the 'e' are the exponent; for positive numbers the '+' is not necessary. Thus 5e+004 = 5 × 10⁺⁰⁰⁴ = 5 × 10⁴ (= 50,000)
There are 10 digits from which the first number can be selected, 10 digits from which the second number can be chosen and 10 from which the third number can be picked. This gives you a total number of combinations of 10 x 10 x 10 = 1000.
There are 10 digits. first there are three digits then space then another three then space and then the last four digits. (example: xxx xxx xxxx)
There are 10 digits in a billion.
Two - the first three zeros are not significant.
Since 0 cannot be in the first place of the 4-digits number, we have 9 x 10 x 10 x 10 = 9,000 combinations.
We only use 10 digits (0 through 9), so I would say, there is one of them.
Usually has 10 digits.