usFind the HCF and LCM of the following given pairs of numbers by(i) 1

1.	usFind the HCF and LCM of the following given pairs of numbers by(i) 120,90 (11) 50,60 (ii) 37,49Mof the following given pairs of numbers by prime factorisation
Answer» 1)120/2=60/2=30/2=15/3=5; 90/2=45/3=15/3=5; 2) 50/2=25/5=5; 60/2=30/2=15/3=5; 3) 37/1=37; 49/7=7 50= 2×5×5=2×5^260=2×2×3×5= 2^2×3×5HCF= 2×5=10LCM= 2^2×5^2×3 = 4×25×3=300 hcf= 10 LCM= 300 is the correct answer of the given question Hch=10 lcm=300 is the correct answer

usFind the HCF and LCM of the following given pairs of numbers by(i) 120,90 (11) 50,60 (ii) 37,49Mof the following given pairs of numbers by prime factorisation

Answer»

1)120/2=60/2=30/2=15/3=5; 90/2=45/3=15/3=5; 2) 50/2=25/5=5; 60/2=30/2=15/3=5; 3) 37/1=37; 49/7=7

50= 2×5×5=2×5^260=2×2×3×5= 2^2×3×5HCF= 2×5=10LCM= 2^2×5^2×3 = 4×25×3=300

hcf= 10 LCM= 300 is the correct answer of the given question

Hch=10 lcm=300 is the correct answer