Q451
The digit in the unit's place of the product (2464)1793 × (615)317 × (131)491 is :
A.
0
AnswerB.
2
C.
3
D.
5
Answer: Option A
Solution
Answer: Option A
Solution:
Unit digit in the given product = Unit digit in (41793 × 5317 × 1491)Unit digit in 42 is 6 and so the unit digit in (42)896 is 6
∴ Unit digit in 41793
= Unit digit in (6 × 4)
= unit digit in 24, which is 4
Unit digit in 5317 is 5 and the unit digit in 1491 is 1
∴ Unit digit in the given product = Unit digit in (4 × 5 × 1), which is 0