Q279
The unit digit in the product of 3 × 38 × 537 × 1256 is :
A.
4
B.
2
C.
6
D.
8
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Unit's digit in 3 x 38 x 537 x 1256= Unit's digit in 3 x 8 x 7 x 6
= 4 x 2
= 8
Note : Always multiply only unit digit of first number, to second and product's unit digits number with 3rd number. Again product of last's unit digit to fourth and so on.