Question

Find the first non-zero digit of the number 80^127 from right side.

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Answer 1

Answer:

Answer

127 divide by 4=3

8,4,2

so final Answer is 2

Answer 2

Given :   80¹²⁷  

To Find : first non-zero digit of the number 80¹²⁷   from right side.

Solution:

80¹²⁷  

= ( 8 * 10)¹²⁷

= 8¹²⁷  * 10¹²⁷

10¹²⁷  is all zeroes on right sides

Hence

8¹²⁷   last digit will give   first non-zero digit  from right

(2³)¹²⁷

= 2³⁸¹

= ( 2⁴)⁹⁵ * 2

= ( 16)⁹⁵  * 2

16 will end with 6

6 * 2  = 12  

Hence number ends with 2

first non-zero digit of the number 80¹²⁷   from right side.  will be 2

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