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Find the unit digit:
(17) (19) (13)
  • a)
    2
  • b)
    3
  • c)
    7
  • d)
    9
Correct answer is option 'B'. Can you explain this answer?
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Find the unit digit:(17) (19) (13)a)2b)3c)7d)9Correct answer is option...
17 is raised to the power of 19 and 19 is raised to the power of 13.
To find the last digit of the number of this kind we will start with the base, and the base here is 17.
To get the unit digit of a number our only concern is the digit at the unit place i.e.7.
The cyclicity of 7 is 4.
Dividing 1913  by 4.
Remainder will be 3.
7 raised to power 3 (73), the unit digit of this number will be 3.
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Find the unit digit:(17) (19) (13)a)2b)3c)7d)9Correct answer is option...
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Find the unit digit:(17) (19) (13)a)2b)3c)7d)9Correct answer is option...
To find the unit digit of the given expression (17) (19) (13), we need to find the unit digit of each term and then multiply them.

Unit digit of 17:
The unit digit of 17 is 7.

Unit digit of 19:
The unit digit of 19 is 9.

Unit digit of 13:
The unit digit of 13 is 3.

Multiplying the unit digits:
Multiplying the unit digits of the three terms, we get 7 x 9 x 3 = 189.

The unit digit of 189 is 9.

Therefore, the correct option is B) 3.
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Find the unit digit:(17) (19) (13)a)2b)3c)7d)9Correct answer is option 'B'. Can you explain this answer?
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