Find the largest number that will divide 398,436and542 leaving remainders 7,11and15

Answers (1)
S safeer

The required number is the HCF of (398-7), (436-11),(542-15).

That is HCF of 391,425, 535

391=17 x 23

425=52 x 17

527=17 x 31

The heighest commen factor is 17

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