Bunuel wrote:
If the three-digit integer x=”abc”, where a, b, and c represent nonzero digits of x, what is the value of x?
(1) a>= 3b. Not sufficient, since no info about c.
(2) b>= 3c. Not sufficient, since no info about a.
(1)+(2) We have that a>= 3b and b>= 3c. Now, since each represent a nonzero single digit then c can only be 1, b can only be 3 and a can only be 9. Because if c=2 (or more) then the least value of b is 6 and in this case the least value of a is 18, so it's no more a single digit. Sufficient.
Answer: C.
Hi
Bunuel I went this very weird road where I expanded what x would look like in terms of a,b,c
shouldn't x be something like this= a(100)+b(10)+1(c)
and then substituted values from both stm 1 and stm. 2
stm 1+stm 2 , a>= 3b & b>= 3c. let a=3b and b=3c
but I got completly different answer, it was 142 :/ could you please share if this is the right way to go.