Question

Find the H.C.F. of 6,12,18 by division method. Please tell me fast ​

Answer 1

Answer: mithunn

Step-by-step explanation:

to find the answer make a table for division method.

Your 1st number is 18.

Find its factors.

2 times 9 is 18

3 times 3 is 9

3 times 1 is 3

so your factors are = 2X3X3

Next number is 54

so its factors are

2 times 27 is 54

3 times 9 is 27

3 times 3 is 9

3 times 1 is 3.

so your factors are = 2X3X3X3

last number is 81

factors are:

3 times 27 is 81

3 times 9 is 27

3 times 3 is 9

3 times 1 is 3

your factors are = 3X3X3X3

NOW PUT THEM ALL TOGETHER:

Factors of 18 =2X3X3

Factors of 54 = 2X3X3X3

Factors of 81 =3X3X3X3

Now look for common factors which are all present in all 3 rows.

3 is present once

3 is present again.

match the common by encircling how many times 3 is common in all 3 rows.

twice.

now you see that 3X3 is common in all three rows.

thats your answer, 3 times 3 = 9.

your HCF is 9

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Answer 2

Answer:

now try to solve this question by yourself hope it helps you

Step-by-step explanation:

Step I:

Divide the large number by the smaller one.

Step II:

Then the remainder is treated as divisor and the divisor as dividend.

Step III:

.

Divide the first divisor by the first remainder.

Step IV:

Divide the second divisor by the second remainder.

Step V:Continue this process till the remainder becomes 0.

The divisor which does not leave a remainder is the H.C.F. or G.C.D. of the two numbers and thus, the last divisor is the required highest common factor (H.C.F) of the given numbers.

Let us consider some of the examples to find highest common factor (H.C.F) by using division method.

1. Find highest common factor (H.C.F) of 18 and 30 by using division method.

Solution: it's in the pic