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Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
47, 48, 44, 53, 37, ?
Option 1: 52
Option 2: 64
Option 3: 62
Option 4: 55
Answer (1)
Correct Answer: 62
Solution : Given:
47, 48, 44, 53, 37, ?
In the above-given series alternately add and subtract squares of consecutive natural numbers to obtain the next number.
47 + 12 = 47 + 1 = 48; 48 – 22 = 48 – 4 = 44; 44 + 32 = 44 + 9 = 53; 53 – 42 = 53 – 16 = 37; 37 + 52 = 37 + 25 = 62
So, the next number of the series is 62. Hence, the third option is correct.
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