What will come in place of the question mark (?) in the following number series?
30 35 45 (?) 105 185 345
Correct Answer: Option A
The pattern of given series is:
→ 30,
→ 35 = 30 + 5,
→ 45= 35 + 10, (5 × 2 = 10)
→ ? = 45 +20, (10 × 2 = 20)
→ ? = 65
→ 105= 65 + 40, (20 × 2 = 40)
→ 185 = 105 + 80, (40 × 2 = 80)
→ 345 = 185 + 160, (80 × 2 = 160)
Thus, the missing number is 65
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