Math, asked by siddho5971, 21 hours ago

53. If "P6: "P3= 120:1, then n = A) 8 B) 11 09 D) 10

Answers

Answered by kkamit179

0

Answer:

dgdewgdewygdyuwedfywefdytwe

Step-by-step explanation:

Answered by aaronranjan

0

Answer:

10

Step-by-step explanation:

n

P

3

:

n

P

6

=1:210

(n−6)!

n!

(n−3)!

n!

=

210

1

(n−3)!

(n−6)!

=

210

1

(n−3)(n−4)(n−5)

1

=

7×6×5

1

n−3=7

n=10

∴n=10

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