Question:
Find the digit at unit place in the product (742 × 437 × 543 × 679)
A2
B4
C6
D8
Answer:
D. 8
Explanation:
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