RRB NTPC · Question 51
Which of the following is an odd composite number?
Show answer & explanation
Answer: (D) 15
Explanation
13 and 17 are prime and 12 is even. 15 = 3 × 5 is both odd and composite.
Railways PYQCBT 2 2017
RRB NTPC · Question 51
Answer: (D) 15
13 and 17 are prime and 12 is even. 15 = 3 × 5 is both odd and composite.