RRB Group-D Model Paper 20 with answers for online practice

Given:
LCM = 40 times HCF
The product of the numbers is 1440
Formula used:
LCM × HCF = Product of numbers
Calculation:
Let HCF of the number be 'H'
⇒ LCM = 40H
Now,
LCM × HCF = Product of numbers
⇒ 40H × H = 1440
⇒ H2 = 1440/40 = 36
⇒ H = 6
∴ HCF = 6