Which of the following numbers will replace the question mark (?) in the given series? 8463, 8384, 8305, 8226, ?, 8068

Correct option is B

Let's look at the difference between each consecutive pair of numbers in the series:
Difference between 8463 and 8384.
8463−8384 = 79
Difference between 8384 and 8305
8384−8305 = 79
Difference between 8305 and 8226.
8305−8226=79
The difference between each consecutive number is consistently 79. This suggests that the series decreases by 79 each time.
Since the difference between each pair is 79, the next number in the series can be calculated by subtracting 79 from 8226:
8226−79 = 8147
We should also check if subtracting 79 from 8147 gives us the next number in the series, 8068.
8147−79 = 8068
Hence, Option (b) is correct answer.