Question

If the LCM of two numbers 4 and 5 is 20. find their HCF
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Answer 1

Answer:

$lcm \times gcd = 4 \times 5 \\ 20 \times x = 20 \\ x = 20 \div 20 \\ x = 1 \\ \\ therefore \: gcd = 1$

pls mark as BRAINLIEST

Answer 2

Answer:

the HCF is 1

Step-by-step explanation:

factors of 4: 1, 2, 4

factors of 5: 1, 5