Suppose that the division x ÷ 5 leaves a remainder 4 and the division x ÷ 2 leaves a remainder 1. Find the ones digit of x.
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Answer:
9
Step-by-step explanation:
Given that:
(a) x/5 leaves a remainder 4.
(b) x/2 leaves a remainder 1.
From (a) and (b) we can say that:
2nd condition implies that x is odd and condition (1) says that x can take values as 4,9,14,19,24,29......... .
So, ones digit of x can be 4 or 9 but since x is odd so we have last digit of x as 9 only.
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