way12go wrote:
If y is an odd integer and the product of x and y equals 222, what is the value of x?
(1) x is a prime number.
(2) y is a 3 digit number.
From F.S 1, we know that y is odd. Prime factorisation of 222: 2*3*37. Thus,
x could be 2, and y = 3*37(odd)
x could be 3, but y will now be even.
Again,the same for x=37. Thus, the only combinaiton possible is x=2, y=111.Sufficient.
From F.S 2, just as above, we can have y=111, x=2.Also, we could have y=101 and x =\(\frac{222}{101}\). Insufficient.
A.
Yes, understood. missed that one