Question : Directions: Which number will replace the question mark (?) to complete the given series?
17, 18, 20, ?, 27, 32
Option 1: 22
Option 2: 20
Option 3: 23
Option 4: 21
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Correct Answer: 23
Solution :
Given:
17, 18, 20, ?, 27, 32
In the given series, add consecutive natural numbers to the previous number to get the next number –
17 + 1 = 18; 18 + 2 = 20; 20 + 3 = 23; 23 + 4 = 27; 27 + 5 = 32
So, the missing number in the series is 23. Hence, the third option is correct.
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