If b is any positive integer and a=7, applying Euclid’s division lemma (b=aq+r), the value of r can be:
A
−1
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B
6
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C
7
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D
8
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Solution
The correct option is B6 We know that b=aq+r, where 0≤r<a
Given that a=7 ⟹b=7q+r ⟹0≤r<7
So, from the given options, r can take only one value, which is 6.