The unit digit in the product \((784\times618\times917\times463)\) is:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 2
The unit digit of a product depends only on the unit digits of the numbers multiplied, so only 4, 8, 7 and 3 are needed.
\(4\times8=32\), unit digit 2
\(2\times7=14\), unit digit 4
\(4\times3=12\), unit digit 2