Question

refer the above attachment. Thank You​

Answer 1

Answer:

n/6!=4/8!+3/6!

n/6.5.4.3.2.1= 4/8.7.6.5.4.3.2.1+3.6.5.4.3.2.1

n/720=4/56.720+3/720

n/720=1/720(4/56+3)

n=1+42/14

n=43/14