If y is an integer , is y^3 divisible by 9?
1)y is divisible by 4.
2)y is divisible by 6.
1)y is divisible by 4.
2)y is divisible by 6.
Regards,
Sach
Sach
1)y is divisible by 4.
lets take y = 8, =>y^3 = 8*8*8 ..... not divisible by 9
y = 12 =>Y^3 = 12*12*12..... divisible by 9
therefore Insuf
2)y is divisible by 6.
therefore, y is divisible by 2 and 3.
and Y^2 and Y^3 will be divisible by 9.
Therefore Suff
Ans is B
