find r if P (20,r)=13.P(20,r-1)
vanyaawasthi:
please answer fast
Answers
Answered by
17
given 20pr =13..20p(r-1)
Attachments:
Similar questions
Math,
6 months ago
Math,
6 months ago
Math,
1 year ago
Computer Science,
1 year ago
History,
1 year ago