Question : Directions: What should come in place of X in the given series?
17, 22, 32, 47, 67, X
Option 1: 95
Option 2: 87
Option 3: 92
Option 4: 90
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Correct Answer: 92
Solution :
Given:
17, 22, 32, 47, 67, X
Add the consecutive multiples of 5 to each number to obtain the next number of the series –
17 + (5 × 1) = 17 + 5 = 22;
22 + (5 × 2) = 22 + 10 = 32;
32 + (5 × 3) = 32 + 15 = 47;
47 + (5 × 4) = 47 + 20 = 67;
67 + (5 × 5) = 67 + 25 = 92
So, 92 is the missing number of the series. Hence, the third option is correct.
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