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What is the unit digit in {(6374)1793 x (625)317 x (341491)}?
Answer & Solution
Correct Answer:
Option
A
Unit digit in (6374)1793
= Unit digit in (4)1793
= Unit digit in [(42)896 x 4]
= Unit digit in (6 x 4) = 4
Unit digit in (625)317
= Unit digit in (5)317
= 5
Unit digit in (341)491
= Unit digit in (1)491
= 1
Required digit
= Unit digit in (4 x 5 x 1)
= 0
= Unit digit in (4)1793
= Unit digit in [(42)896 x 4]
= Unit digit in (6 x 4) = 4
Unit digit in (625)317
= Unit digit in (5)317
= 5
Unit digit in (341)491
= Unit digit in (1)491
= 1
Required digit
= Unit digit in (4 x 5 x 1)
= 0
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