Question

you are given 100 cards numbered 100,99,98......3,2,1 in that order.you want to put them in order 1,2,3......98,99,100 swithching only two adjacent card at a time.What is the minimum number of switches necessary ?

(a) 9801
(b) 10000
(c) 100
(d) 4950

Answer 1

d) 4950 is the minimum number of switches necessary

Answer 2

Answer:

Step-by-step explanation:

Solve by combination formula

100C2