If 8![13!+54!]=9Pr, then the value of r is equal to
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Answered by
2
Answer:
536 I hope it is helpful for you
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Answered by
0
Answer:
We have, 8![
3!
1
+
4!
5
]=
9
P
r
⇒8![
3!
1
+
4⋅(3!)
5
]=
9
P
r
⇒
3!
8!
(1+
4
5
)=
9
P
r
⇒
3!4
8!9
=
9
P
r
⇒
4!
9!
=
(9−r)!
9!
On comparing, we get
9−r=4
⇒r=5
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