alleryहें . 7^25 चो एकक अंक कितलो?
A1
B3
C7
D9
Answer & Solution
Correct answer: C. 7
हें .
7^n चक्राचे एकक अंक: 7, 9, 3, 1, 7, 9, 3, 1... (काळ
4) हें नांव.
25 mod 4 = 1, देखून एकक अंक 7^1 = 7 जुळटा.
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