Request help with the following question.Thanks..
Is PQ > 1?
1.P^q = 1
2.q = -1
Statement 1: p^q =1
=> p could be any number and q=0
or q could be any number and p=1
or q coule be any even number and p=-1
Clearly not sufficient as PQ could be 0, >1 or <1.
Statement 2: q=-1
Clearly insufficient, no information on p.
Combining statement 1 and 2: if q=-1 and p^q =1
this gives p = 1, q=-1. Sufficient. (We can answer whether pq>1 or not)
Hence Ans C it is.
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