Question

Choose the number pair/group which is different from the others.
A) 70–80 B) 54–62 C) 28–32 D) 21–24 E) 14–16

• A. 70–80
• B. 54–62
• C. 28–32
• D. 21–24
• E. 14–16

Hint:

In "Odd One Out" number pairs, always check ratios and common factors before simple differences.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
In number pair classification, look for a common ratio or a shared divisor between the two numbers in each pair.
Step 2: Identifying the Vector of Change:
Simplify the ratio of each pair: - (a) $70:80 = 7:8$ - (c) $28:32 = 7:8$ (Divided by 4) - (d) $21:24 = 7:8$ (Divided by 3) - (e) $14:16 = 7:8$ (Divided by 2)
Step 3: Calculation:
Checking option (b): $54:62$. If we divide by 2, we get $27:31$. This does not simplify to the $7:8$ ratio shared by all other pairs.
Step 4: Final Answer:
The pair 54-62 is the odd one out. Thus, the correct option is (b).