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 4
The correct answer is Option (4) → 6320
Compare the product of the first two digits of each number with the number formed by its last two digits.
Option (1) 2918 — \( 2 \times 9 = 18 \), and the last two digits are 18.
Option (2) 2714 — \( 2 \times 7 = 14 \), and the last two digits are 14.
Option (3) 8972 — \( 8 \times 9 = 72 \), and the last two digits are 72.
Option (4) 6320 — \( 6 \times 3 = 18 \), but the last two digits are 20.
In 2918, 2714 and 8972 the last two digits are the product of the first two; 6320 breaks this, so 6320 is the odd one out.