Question

2 natural numbers x and y such that LCM of x,y is 2 power a into 3 power b into 7 power c HCF of x,y 2 power m into 7 power n​

Answer 1

Answer:

Solution

Step-by-step explanation:

Correct option is

A

1 or 2

Suppose the HCF of (x−y,x+y) is m.

∴

x−y

m

and

x+y

m

∴ x−y=am and x+y=bm

∴ 2x=(a+b)m

Also 2y=(b−a)m

Now HCF of (x,y)=1

∴ 2 HCF of (x,y)=2

HCF of ((a+b)m,(b−a)m) is 2

m× HCF of (a+b,b−a)=2×1=2

∴ m=1 or 2.