Paper 1 · Mathematical Reasoning and Aptitude
Find the odd number pair: 3 : 5, 5 : 3, 6 : 2, 7 : 3.
A3 : 5
B5 : 3
C6 : 2
D7 : 3 ✓ Correct
Correct answer: (D) 7 : 3 — 7 : 3 is the odd pair, so that is the answer.
Explanation
★7 : 3 is the odd pair, so that is the answer.
★Add the two numbers in each pair.
★3 plus 5 is 8, 5 plus 3 is 8 and 6 plus 2 is 8.
★So three pairs add up to 8.
★7 plus 3 is 10, which is different.
★So the odd pair is 7 : 3.
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