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Q.

If a and b are two integers, then which of the following may not be an integer?

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a

a - b

b

a x b

c

a + b

d

a ÷ b

answer is D.

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Detailed Solution

detailed_solution_thumbnail

If a and b are two integers, then

a + b will always be an integer.

a – b will always be an integer.

a × b will always be an integer.

but, 

a ÷ b may or may not be an integer.

for example 4 ÷ 10 = 0.4, which is not an integer.

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