Question

see the picture answer the question

Answer 1

120,90= 2×2×2×3×3×5
50,60= 2×2×3×5×5
37,49= 7×7×37

Answer 2

(i) 120 & 90
prime factor of 120 =2×2×2×3×5
prime factor of 90= 2×3×3×5
LCM = 2×2×2×3×3×5= 360
HCF= 2×3×5=30

ii) prime factor of 50 = 2×5×5
prime factor of 60= 2×2×3×5
LCM= 2×2×3×5×5=300
HCF=2×5=10

iii) prime factor of 37=37×1
prime factor of 49= 7×7×1
LCM=7×7×37=1813
HCF=1