Q12

Number Theory Level pending

Let x be the elements of the set A={1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120} and ${ x }_{ 1 },{ x }_{ 2 },{ x }_{ 3 }$ be positive integers and d be the number of integral solutions of ${ x }_{ 1 }{ x }_{ 2 }{ x }_{ 3 }=x$ then d is divisible by

15 15,25 10,20 25