Question

if 11pr=110 then the value of r is
(a) 2
(b) 10
(c) 4
(d) none of these​

Answer 1

Answer:

probably none of the above

       not sure though!

Hope this helps!!

Answer 2

Answer:

a.2 is a correct ans

Step-by-step explanation:

11!/(11-r)!=110

(11-r)!=11!/110

(11-r)!=(11×10×9!)/(11×10)

(11-r )!=9!

11-r=9

-r=9-11

-r=-2

r=2

so the ans is 2

thank you