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What is w+c-x?

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What is w+c-x?

by uptowngirl92 » Mon Oct 26, 2009 12:08 am
Multiplication of the two digit numbers wx and cx, where w,x and c are unique non-zero digits, the product is a three digit number. What is w+c-x?
(1) The three digits of the product are all the same and different from w c and x.
(2) x and w+c are odd numbers.
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by italian7745 » Mon Oct 26, 2009 12:57 am
a) The 3 digits of the product are same that means - we have choices 111,222,333,444,555,666,777,888,999

Out of these only 999 fits = 37 x 27

we can get the answer from this option

b) let x=1 , w=2 , c=3 so 21 x 31 = 651 w+c-x = 4
let x=3 , w=1 c=2 so 13 x 23 = 299... w + c - x = 0

Insufficient

IMO A
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by italian7745 » Mon Oct 26, 2009 1:03 am
Posted again
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