Question

1. Find the HCF by prime factorisation method :
(b) 60, 80, 120
375-3x5x5x5
825=8x5x5x11
HCF = 3x5x5
75
​

Answer 1

Answer:

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Step-by-step explanation:

a. 375 = 3 × 53;

825 = 3 × 52 × 11;

Take all the common prime factors, by the lowest exponents.

highest common factor (divisor)

(375; 825) = 3 × 52 = 75

b. Factorize of the above numbers :

60 = 2^2 • 3 • 5

80 = 2^4 • 5

120 = 2^3 • 3 • 5

Take all the common prime factors, by the lowest exponents.

highest common factor (divisor)

(60, 80, 120) = 2^2 × 5 = 20

Answer 2

Answer:

your answer is 375

Step-by-step explanation:

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