RRB NTPC · Question 112
Find the value of '?' in the following series. 6 : 30 :: 7 : ?
Show answer & explanation
Answer: (D) 42
Explanation
30 = 6 × 5 (a number times one less than itself). So 7 → 7 × 6 = 42.
Railways PYQCBT 2 2017
RRB NTPC · Question 112
Answer: (D) 42
30 = 6 × 5 (a number times one less than itself). So 7 → 7 × 6 = 42.