CTS Company Numerical Ability LCM and HCF

The product of two numbers is 2028 and their H.C.F. is 13. Find the LCM?

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CTS Other Question

There are 4 boxes colored red, yellow, green and blue. If 2 boxes are selected, how many combinations are there for at least one green box or one red box to be selected? The number 642 is added to a 3-digit number 7x2 to give a 4 digit 13y4 which is exactly divisible by 11.
Find the value X*Y