Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 10)
10.
What is the unit digit in {(6374)1793 x (625)317 x (341491)}?
Answer: Option
Explanation:
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.
Discussion:
123 comments Page 13 of 13.
Chetman said:
6 years ago
This can be done by this method too.
Just see the last number of the given number and the last number in the raise to find out the root.
Do the same for another two number.
Then you'll get three numbers after finding the root.
Then take the last numbers of these values and multiply them.
I checked it out for more other three example taken by myself and got it correct.
Just see the last number of the given number and the last number in the raise to find out the root.
Do the same for another two number.
Then you'll get three numbers after finding the root.
Then take the last numbers of these values and multiply them.
I checked it out for more other three example taken by myself and got it correct.
Abitha said:
5 years ago
Thanks for explaining @Seema.
Boite said:
4 years ago
Thank you all for explaining the answer.
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