Question

Find the HCF of horizontal methods 218,440.​

Answer 1

Greatest common factor (GCF) of 218, 440 is 2.

GCF(218, 440) = 2

Answer 2

Solution :-

we know that,

• HCF(Highest common factor) = Greatest number which exactly divides all the given numbers .

now, finding HCF of 218 and 440 by horizontal methods .

2 | 218

1 | 109

109

218 = 2 * 109

and,

2 | 440

2 | 220

2 | 110

5 | 55

11

440 = 2 * 2 * 2 * 5 * 11

then, common factor between both is 2 only.

therefore,

→ HCF = Product of least power of common factors .

→ HCF = 2 (Ans.)

Learn more :-

find the L.C.M of 6 and 9

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