The digit in the unit's place of the number represented by \((7^{95} - 7^{58})\) is
Question and options
The digit in the unit's place of the number represented by is
- 0
- 4
- 6
- 7
Answer and explanation
Correct answer: B - 4
7^95 ends in 3 (95 mod 4 = 3) and 7^58 ends in 9 (58 mod 4 = 2). 7^95 > 7^58, so the difference ends in 13 - 9 = 4.
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