Question

HELP PLEASE

Answer 1

im gonna say c, but im not 100%

Answer 2

How?

Answer 3

@ganeshie8

Answer 4

"u" has oly 5 places to go

Answer 5

it cannot occupy 1st and 7th places

Answer 6

so we may work the 5 cases

Answer 7

case 1 : "u" at 2nd position :
one "a" must be fixed at 1st position, so total possible permutations = 5!

Answer 8

does that look okay ha ?

Answer 9

we need to work 4 other cases and add them all.

Answer 10

just after working case1, we can strike off options a, b, c.
answer must be between options : d and e

Answer 11

if that makes any sense... .

Answer 12

so its 5! + 4! + 3! + 2! + 1! ?

Answer 13

its not simple as that

Answer 14

work it case by case