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KCET2008MathematicsBinomial Theorem

The digit in the unit's place of 5⁸³⁴ is

Options

  1. A0
  2. B1
  3. C3
  4. D5

Correct answer

D. 5

Step-by-step solution

Now, 5¹=5,5²=25,5³=125, . Here, we see that in every power of 5 , we get the unit digit is 5 . Hence, unit's place of 5⁸³⁴ is 5 .

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