Which number will replace the question mark lsquo 7 in the following series 1 3 4 7 18 29 ........

Logical Reasoning (CPO) Number series

Which number will replace the question mark (‘7) in the following series?

1, 3, 4, 7, ?, 18, 29

This questions was previously asked in

SSC CPO 13th-March-2019-Shift-1

- Start by observing the pattern: \(1, 3, 4, 7, ?, 18, 29\).

- Look for pattern in the differences between numbers:

- \(3 - 1 = 2\)

- \(4 - 3 = 1\)

- \(7 - 4 = 3\)

- Next, apply the same logic:

- \(7 + 1 + 3 = 8\)

- But we need to follow arithmetic for remaining sequence, or adjust understanding:

- \(18 - 7 = 11\)

- \(29 - 18 = 11\)

- Consistent difference of 11 shows potential oversight.

- Check each option:

- Option 1: 10 -> Does not fit computed sequence.

- Option 2: 13 -> Does not fit computed sequence.

- Option 3: 15 -> Does not fit computed sequence.

- Option 4: 11 -> fits the arithmetic sequence after adjustments.

Answer: 11 (option 4)

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