Can't be the number of balls

Probability Level 1

A jar contains red balls and green balls in the ratio $3:2$ .

If the jar contains only these two type of balls,

which of the following cannot be the number of balls in the jar?

25 30 60 24 35

2 solutions

Nazmus Sakib
Nov 14, 2017

A jar contains red balls and green balls in the ratio $3:2$ .

$3+2=5,$

$30,60,35,25~ \text{are divisible by}~ 5,$

but $24$ isn't divisible by $5$ .

Saksham Jain
Nov 15, 2017

let balls be 3x,2x. total balls 5x therefore x must be divisible by 5. 24 is not