Study the given pattern carefully and select the number that can replace the question mark in it Fir...........

General Intelligence and Reasoning (CHSL) Number series

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

First row- 5, 16, 77

Second row- 13, 12, ?

Third row- 8, 19, 149

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.

E.g. 13 - Operations on 13 such as adding /deleting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3

and then performing mathematical operations on 1 and 3 is NOT allowed)

This questions was previously asked in

SSC CHSL 10th June 2022 Shift-1

157

153

151

155

- Let's examine the pattern. The focus is on finding relationships between the numbers in each row.

- First Row: The sequence is 5, 16, 77.

- Notice: \(5 \times 5 + 16 = 25 + 16 = 41\) (Not Equal to 77)

- Third Row: The sequence is 8, 19, 149.

- Observe: \(8 \times 8 + 19 = 64 + 19 = 83\) (Not Equal to 149)

- Let's try a different operation for pattern:

- For the first row, \(5 \times 16 - 3 = 77\).

- Third row, \(8 \times 19 - 3 = 149\).

- Second Row: The sequence is 13, 12, ?.

- Use the same operation: \(13 \times 12 - 3\).

- Calculating: \(13 \times 12 = 156\), then \(156 - 3 = 153\).

Correct Answer: Option 2, 153.

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