Question 8
Among natural numbers less than 1000, how many have exactly 5 positive factors?
Original printed choices: A: 20; B: 24; C: 50; D: 48.
Editorial response format: give the exact answer; the original choices are retained for reference.
Original printed choices: A: 20; B: 24; C: 50; D: 48.
Editorial response format: give the exact answer; the original choices are retained for reference.