Question

without performing long division so that the rational number 42 by 1120 has a terminating decimal expansion also find its decimal expansion without doing the long division

Answer 1

Answer:

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Step-by-step explanation:

For terminating decimal the prime factorisation of denominator should only contain the factor 2 or factor 5 or both factors 2 and 5. prime factorisation of denominator containing factors 2 & any other number or factors 5 & any other number or faciors 2,5 & any other number are non terminating decimals.