Question

If 7Pn ÷ 7Pn-3 = 60 the value of n is

(a) 8 (b) 4 (c) 5 (d) 2

(c) 5 is correct answer

Please Give Full Solution
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Answer 1

Answer:

7pn÷7pn-3=60

7pn÷7pn=49pn-3

=49-3=46

(d) 2 us correct answer because did divide in 2

Answer 2

Answer:

This is an basic permutation sum.we can solve this using permutation formula.Hope u like this.All the best guys