Three of the following four numbers are alike in a certain way and one is different. Choose the number that does not belong to the group.
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 962
Divide each number by 7.
Option (1) 962 — \( 962 = 7 \times 137 + 3 \): leaves remainder 3, so it is not a multiple of 7.
Option (2) 938 — \( 938 = 7 \times 134 \): a multiple of 7.
Option (3) 413 — \( 413 = 7 \times 59 \): a multiple of 7.
Option (4) 497 — \( 497 = 7 \times 71 \): a multiple of 7.
938, 413 and 497 are multiples of 7; 962 is not, so 962 is the odd one out.