Question : Insert the missing number 3, 18, 12, 72, 66, 396, ?.
Option 1: 300
Option 2: 380
Option 3: 350
Option 4: 390
Correct Answer: 390
Solution :
Given: 3, 18, 12, 72, 66, 396, ?
The pattern is: 3 × 6 = 18
18 – 6 = 12
12 × 6 = 72
72 – 6 = 66
66 × 6 = 396
396 – 6 = 390
Hence, the correct answer is 390.
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