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Question

If ‘m’ is a natural number and ‘a’ is the units digit of [(315)m + (111)m + (656)m], then the value of (a2 – 1) is
यदि ‘m’ एक प्राकृत संख्या है तथा [(315)m + (111)m + (656)m] का एक इकाई अंक ‘a है, तब (a2 – 1) का मान है

A
3
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B
0
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C
6
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D
4
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Solution

The correct option is A 3
Solution

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