plss solve this question
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Answer:
r=2
Step-by-step explanation:
4*⁶Pr=⁶Pr+1
or, 4*6!/(6-r)!=6!/(6-r-1)
4/(6-r)! =1/(6-r-1)
(6-r)!=4*(6-r-1)!
(6-r)(6-r-1)! = 4*(6-r-1)!
6-r=4
r=6-4=2
r=2
Anonymous:
wlkm
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