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Which of the following numbers will replace the question mark (?) in the given series?
5, 8, 24, 57, 109, 184, 288, 423, ?
559
595
659
695
Let’s break down the series step by step:
- The series is: 5, 8, 24, 57, 109, 184, 288, 423, ?
- Look at the differences:
8 - 5 = 3
24 - 8 = 16
57 - 24 = 33
109 - 57 = 52
184 - 109 = 75
288 - 184 = 104
423 - 288 = 135
- Find the pattern in differences:
3, 16, 33, 52, 75, 104, 135
- The differences between these numbers:
16 - 3 = 13
33 - 16 = 17
52 - 33 = 19
75 - 52 = 23
104 - 75 = 29
135 - 104 = 31
- Notice, difference of differences is gradually increasing.
- Add last difference (135) to last value (423): 423 + 135 = 558
- But check with next possible pattern (difference of 135, increase is mostly alternately by 4 or 6):
Recent increment: 13, 17, 19, 23, 29, 31
So, next likely increment: after 31 is likely 37 (as per twin prime step), so difference: 135 + 37 = 172
Adding: 423 + 172 = 595
Let’s Check The Options:
- 559
- 595
- 659
- 695
Option 2: 595 is the correct answer.
By: santosh ProfileResourcesReport error
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