Question

In three of the options, the 2nd number is related to the 1st number in a similar logical way. Which is the odd one out?.

• A. 123-6
• B. 723-35
• C. 345-60
• D. 521-10

Answer 1

The Correct Option is B

Step 1: Identify the pattern between the first and second numbers:

• The second number in each pair appears to be derived from the sum of the digits of the first number multiplied by a certain factor.

Step 2: Check the logic for each pair:

• (A) 123 → 1 + 2 + 3 = 6, which matches.
• (B) 723 → 7 + 2 + 3 = 12, but 35 is not a direct multiplication or transformation of 12. 
• (C) 345 → 3 + 4 + 5 = 12, and multiplying by 5 gives 60, which is correct.
• (D) 521 → 5 + 2 + 1 = 8, and multiplying by 1.25 gives 10, which maintains a logical consistency.

Step 3: Identify the odd one out:

• Options (A), (C), and (D) follow a pattern based on summing digits and multiplying by a fixed factor.
• Option (B) does not follow the same pattern, making it the odd one out.

Final Conclusion: The correct answer is (B) 723 → 35.