Try another version of this question
A picosecond in one trillionth of a second. How many picoseconds are there in `4` minutes?
Your answer must be in scientific notation. Use an '*' for multiplication (Ex. 2.3 * 10^5)
Your answer must be in scientific notation. Use an '*' for multiplication (Ex. 2.3 * 10^5)
240000000000000