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Question

If 'a' and 'b' are whole numbers then a - b is
a natural number
cannot be determined
a whole number
none of these

A

a whole number

B

none of these

C

cannot be determined

D

a natural number

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Solution

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$∵$ a - b is a whole number
As, if a is a whole number and b is a whole number then a+b,a-b,ab is a whole number except $a / b$

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