find the highest common factor(hcf) of 21,28,36,45
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⇒ Common factors occur when two or more numbers share one or more of the same factors.
⇒ The factors of a number is the set of all non-zero numbers that divide into the number evenly. For example, the factors of the number 12 would be as follows:
Factors of 12: 1, 2, 3, 4, 6, 12
Because ...
⊄ 1 x 12 = 12
⊄ 2 x 6 = 12
⊄ 3 x 4 = 12
⇄ The greatest common factor is the highest factor that two or more numbers share. ⇄
Number GCF Divisor Factors of Number
21 21 ÷ 1 = 21 1, 3, 7, 21
28 28 ÷ 1 = 28 1, 2, 4, 7, 14, 28
36 36 ÷ 1 = 36 1, 2, 3, 4, 6, 9, 12, 18, 36
45 45 ÷ 1 = 45 1, 3, 5, 9, 15, 45
║According to my calculations, the greatest common factor of the numbers 21, 28, 36 and 45 is 1║
⇒ Common factors occur when two or more numbers share one or more of the same factors.
⇒ The factors of a number is the set of all non-zero numbers that divide into the number evenly. For example, the factors of the number 12 would be as follows:
Factors of 12: 1, 2, 3, 4, 6, 12
Because ...
⊄ 1 x 12 = 12
⊄ 2 x 6 = 12
⊄ 3 x 4 = 12
⇄ The greatest common factor is the highest factor that two or more numbers share. ⇄
Number GCF Divisor Factors of Number
21 21 ÷ 1 = 21 1, 3, 7, 21
28 28 ÷ 1 = 28 1, 2, 4, 7, 14, 28
36 36 ÷ 1 = 36 1, 2, 3, 4, 6, 9, 12, 18, 36
45 45 ÷ 1 = 45 1, 3, 5, 9, 15, 45
║According to my calculations, the greatest common factor of the numbers 21, 28, 36 and 45 is 1║
ramya7:
Thank yoy
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1 is highest common factor
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