Question

Without using long division, show that rational numbers 11/1120 has a terminating decimal expansion.

Answer 1

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Answer 2

when we use prime factorising methord to find the factors of 1120 we get;

1120=2^5.5.7

therefor,it has a factor 7 other than 2 and 5

this shows that 11/1120 is a non terminating no;

it is also proved that it is not rational because it is non terminating

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