Question

Find the digit at unit place in the product (742 × 437 × 543 × 679)

• A. 2
• B. 4
• C. 6
• D. 8

Answer 1

Answer:

D. 8

N = 742 × 437 × 543 × 679 The unit digit of N is the unit digit of the product of the unit digits of the above numbers present in the multiplication. ⇒ 2 × 7 × 3 × 9 ⇒ 14 × 27 ⇒ 4 × 7 ⇒ 28 ⇒ 8