Which of the following numbers will replace the question mark (?) in the given series?
549 482 439 372 329 262 219 ?
Correct Answer :
152
Solution :
The correct answer is 152 (Option 3).
To find the missing number in the given series, let us analyze the pattern of differences between consecutive numbers:
549 - 482 = 67
482 - 439 = 43
439 - 372 = 67
372 - 329 = 43
329 - 262 = 67
262 - 219 = 43
We can observe an alternating subtraction pattern where 67 and 43 are subtracted alternately:
First step: Subtraction of 67
Second step: Subtraction of 43
Third step: Subtraction of 67
Fourth step: Subtraction of 43
Fifth step: Subtraction of 67
Sixth step: Subtraction of 43
Following this alternating pattern, the next operation required to replace the question mark (?) is subtracting 67 from the last term (219):
219 - 67 = 152
Thus, the number that replaces the question mark (?) is 152.
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