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Reinaldo417 Reinaldo417
  • 19-03-2014
  • Mathematics
Answered

If pqr = 1 , rst = 0 , and spr = 0, which of the following must be zero?

AP
BQ
CR
DS
ET

Verified Answer :

Anonymous Anonymous
  • 20-03-2014

P,Q,R can't be 0, because their product is nonzero. Either of S and T could be 0, but the third one only works if S is 0.

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