allery7^25 యొక్క యూనిట్ అంకె ఎంత?
A1
B3
C7
D9
Answer & Solution
Correct answer: C. 7
7^n చక్రం యొక్క యూనిట్ అంకెలు: 7, 9, 3, 1, 7, 9, 3, 1... (కాలం 4).
25 మోడ్ 4 = 1, కాబట్టి యూనిట్ అంకె 7^1 = 7తో సరిపోతుంది.
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