Find the missing number from the given alternatives:

Question

Find the missing number from the given alternatives:

1. A. 30
2. B. 35 (Correct answer)
3. C. 20
4. D. 25

Correct Answer

Option B — 35

Detailed Solution & Explanation

The correct answer is 35.

Key Points

• This is a missing number / matrix reasoning question.
• The three numbers in each row are related by a fixed arithmetic rule, and the same rule must hold for every row of the matrix.
• Checking the pattern across the completed rows and applying the identical operation to the incomplete row gives the missing value as 35, so option (B) is correct.

Exam Tip

• for matrix puzzles, test the standard relationships in a fixed order — first row-wise addition, subtraction, multiplication or division, then column-wise, and only then diagonal patterns.
• Importantly, once you find a rule, verify it on every other row before selecting your answer.
• A rule that works on only one row is a coincidence, and BPSC deliberately includes options that fit a partial pattern to trap candidates who verify just once.

प्रश्न (हिन्दी में)

निम्नलिखित विकल्पों से लुप्त संख्या ज्ञात करें।

1. A. 30
2. B. 35
3. C. 20
4. D. 25