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Question
Let x = (633)24 − (277)38 + (266)54. What is the unit's digit of x?
Options
7
6
4
8
MCQ
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Solution
8
Explanation:
⇒ 34 − 72 + 6
⇒ 1 − 9 + 6
⇒ 17 − 9
= 8
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Number System (Entrance Exam)
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