Question : Directions: In the following question a series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
3, 6, 18, 72, ?, 2160
Option 1: 144
Option 2: 216
Option 3: 288
Option 4: 360
Correct Answer: 360
Solution :
Given:
3, 6, 18, 72, ?, 2160
Multiply each previous term by a consecutive natural number starting from 2.
3 × 2 = 6; 6 × 3 = 18; 18 × 4 = 72; 72 × 5 = 360; 360 × 6 = 2160
So, 360 is the missing number in the given series. Hence, the fourth option is correct.
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