Is pqr = r?

pqr - r = 0

r ( pq - 1) = 0

r = 0 OR pq = 1

For the equation to hold, either:

(1) r=0 and pq could be anything, OR

(2) pq=1 and r could be any number

If we prove (1) or (2) then the answer to the question is YES!

Statement 1: pqs = s tells us either s=0 or pq=1. If s=0 then pq could be any number. it tells nothing about r also. INSUFFICIENT!

Statement 2: pqm = m is the same as Statement 1. INSUFFICIENT!

Answer: E

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Impossible is nothing to God.