If a and b are two natural numbers, then which of the following is not true? a+b=b+a ab=ba a-b=b-a none of these
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Step-by-step explanation:
the option 2 is correct ab is equal to ba this is not correct statement
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a–b = b–a this statement is wrong
explanation =
let the value of a will be 2 and the value of b will be 3 so in case of a–b we caught the 2–3 which is equal to –1 but in case of b–a we have 3–2 we have only 1 which is possitive but In case a=b then this statement is also true
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