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Answer sould be B 90.
answered Jun 22, 2016 by Beginner (1 point)
If you simplify the equation u get 81*10^-8
Now for the value to be an integer n should be at least 8. Also it is mentioned that n is a 2 digit number which means n should start from 10 and can go up to 99
answered Jun 22, 2016 by Student (71 points)
Srijan Srivastava
Answer should be D. Inside the bracket once you solve it should be 81*10^-8. So inorder to be an integer this should be multiplied by 10^8 mininum. So n can take values from 8 to 99 which will be 99-8+1 = 92
answered Jun 22, 2016 by Beginner (21 points)
Two digit number
answered Jun 22, 2016 by (-1 points)
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