find the HCF of 204,1190 and 1445 (please use tricks)
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Factorisation of 204 = 2 × 2 × 3 × 17
Factorisation of 1190 = 2 × 5 × 7 × 17
Factorisation of 1445 = 5 × 17 × 17
∵ there is only one common factor of 204, 1190 and 1445 i.e.
The HCF of 204, 1190 and 1445 is 17.
This is the easiest way to find the HCF of numbers i.e. by prime factorision method.
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