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 7 of 13.
Shital said:
10 years ago
(209*144) ^2+ (209*209) + (209*144) + (144*144) =?
Please tell me.
Please tell me.
Hemant said:
9 years ago
How - (5)^317 = 5?
I solved - (5^2)^158 * 5 it gives unit digit 0.
I solved - (5^2)^158 * 5 it gives unit digit 0.
Sangee said:
1 decade ago
Please tel me how you got (6*4).
Rather than your idea is superb!
Rather than your idea is superb!
Sumanth said:
6 years ago
You mentioned method is suitable for all the unit digit problems.
Swetha said:
1 decade ago
Seema 's method is too good. It saves time. Thank you seema.
Priyankavanga said:
1 decade ago
@Seema
I am satisfied with your answer.
Thanku very much.
I am satisfied with your answer.
Thanku very much.
Apurva Raj said:
9 years ago
Anybody can find the remainder of this question (5^625) /7?
Prajna Samal said:
6 years ago
What is short trick of this sum? I can't understand easily.
Kanimozhi said:
6 years ago
What is short trick of this sum? I can't understand easily.
Suryasish said:
1 decade ago
@Abhigyan reddy.
The units digit can be 1, 3, 7 or 9.
The units digit can be 1, 3, 7 or 9.
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