Question 16 - Week 5 Practice | Prasnya
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Week 5
Question 16
00:00
Est. 1 min
Marks:
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If
10
P
r
+
3
5
P
r
=
90
\frac{{}^{10}P_{r+3}}{{}^{5}P_r}=90
, then what is the value of
7
P
2
{}^{7}P_2
?
Single correct
Easy Difficulty
04 August 2024
A
7
B
21
C
42
D
Insufficient information
