Question

the ratio of factorial of a number x to the square of the factorial of another number,which when increased by 50% gives the required number,is 1.25. find the number x?

Answer 1

p! / (q!)^2

so u mean q+0.5 q =p ?

Answer 2

optinons
a. 6
b 5
c 9

Answer 3

well the interpretation of que is itself confusing to me

Answer 4

ohkk , so its like this :)
x! / (q!)^2 + 50 % x! / (q!)^2 = 1.25

Answer 5

@ganeshie8 is it correct so far ?

Answer 6

the ans shows 6!/(4!^2)=1.25, but i cant get it

Answer 7

im still trying to interpt it

Answer 8

btw in the question which referse to what xD

Answer 9

x refers to 6

Answer 10

this which
http://prntscr.com/4af8q0

Answer 11

i think que may be wrong

Answer 12

4+50% of 4 = 6

Answer 13

ok ok
its like this lol
x!/q! =1.25

x=q+0.5 q
now it make sense :)

Answer 14

so its, q+50% of q = x

Answer 15

so

q!/(q+0.5q )! ^2 =1.25
solve for q

Answer 16

(q+0.5q)!/(q!)^2 =1.25

Answer 17

oh sorry typo sau

Answer 18

so
q=x/1.5
(q+0.5q)!/(q!)^2 =1.25
(1.5 ) q! / q!^2 =1.25

1.5 =1.25 q!

Answer 19

mmm

Answer 20

that last step cannot be done

Answer 21

i think your interpretation is correct,
150% of q must give the x


x = 1.5q

Answer 22

its , (1.5q)!/(q!)^2 =1.25
q! cannot be canceled

Answer 23

yeah mmm
being ratio 5/6
still dont know

Answer 24

lol ok xD
i thought this thing is correct xD

(ab )! = a (b!) = a! (b)

Answer 25

ok we can interept it like this

1.5 q should be integer

Answer 26

also q should be integer

Answer 27

and only 6 makes it an integer is it

Answer 28

we should reason that

Answer 29

ofcourse out of the given options

Answer 30

lets see if there is another way

Answer 31

that looks good to me,
5 and 9 are odd so they cannot make 1.5q an integer... so we can conlude the answer is 6

Answer 32

(3/2 q )
then q is even

hehe xD
yeah options

Answer 33

thns

Answer 34

@ganeshie8
how to go far from here ?


ok lol what i wanna say is
n=1,2,3,4,.....
so check whick n satisfy :3
that would be n=2
q=2n=4
thus
x=6