Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
89, 170, 219, 244, 253, ?
Option 1: 254
Option 2: 257
Option 3: 255
Option 4: 256
Correct Answer: 254
Solution :
Given:
89, 170, 219, 244, 253, ?
Add the square of consecutive odd numbers in decreasing order starting from 9, to get the required missing number –
89 + 9
2
= 89 + 81 = 170;
170 + 7
2
= 170 + 49 = 219;
219 + 5
2
= 219 + 25 = 244;
244 + 3
2
= 244 + 9 = 253;
253 + 1
2
= 253 + 1 = 254
So, the missing number is 254. Hence, the first option is correct.
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