The unit digit in the product \(254\times218\times567\times413\) is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 2
The unit digit of a product depends only on the unit digits of the numbers multiplied, so only 4, 8, 7 and 3 matter. Multiply them one at a time, keeping only the unit digit each time:
\(4\times8=32\), unit digit 2
\(2\times7=14\), unit digit 4
\(4\times3=12\), unit digit 2