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
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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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