If 16Pr-1 : 15Pr-1 = 16 : 7 then find r. – McqOptions

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1.	If 16Pr-1 : 15Pr-1 = 16 : 7 then find r.
A.	10
B.	12
C.	7
D.	8
Answer» B. 12

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If 16Pr-1 : 15Pr-1 = 16 : 7 then find r.