Question

number of ways in which 5 A's and 6 B's can be arranged in a row which reads the same backwords and forwards in N then the value of N/2 is​

Answer 1

Answer:

arrangement can be done in 10 Ways

N/2 = 5

Step-by-step explanation:

Number of ways in which 5 A's and 6 B's can be arranged in a row which reads the same backwards and forwards

as it reads the same backwards and forwards

=> Numbers of A & B should be same in left & right side of ceter/middle

as B are 6 so B can not be in middle as then  Remaining 5 B can not be

equal in left & right of middle

=> A should be in center

and 2A & 3B Should be arranged in left

& just reverse of that in Right

so we will find arrangement of 2A  & 3B

= ⁵C₂  or ⁵C₃

= 10 ways

=> N = 10

N/2 = 5

Answer 2

Answer:

Step-by-step explanation:Answer:87.5%

Step-by-step explanation:

increase in size =3.5

percentage of increment=

(3.5÷4)×100=0.875×100=87.5