Is rst=1 ?
1) rs=1
2) st=1
how do you evaluate the statements together?
is rst 1?
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Target question: Is rst=1?kobel51 wrote:Is rst=1 ?
1) rs=1
2) st=1
Statement 1: rs = 1
No information about t
INSUFFICIENT
Statement 2: st = 1
No information about r
INSUFFICIENT
Statements 1 and 2 combined
So, rs = 1 and st = 1
This means that rs/st = 1/1
Simplify to get r/t = 1
This tells us that r = t, so this is all that we can conclude one we combine the statements.
If r = t, there are still several values of r, s and t that satisfy the both statements. Here are two:
Case a: r = 1, s = 1 and t = 1, in which case rst = 1
Case b: r = 0.5, s = 2 and t = 0.5, in which case rst = 0.5
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT
Answer = E
Cheers,
Brent
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can different variables represent the same number and same varible represents two differ numbers ????
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Yes. Each variable has a specific value (that's why from x^2=1, we don't know what x is), but two variables can share the same value.
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