A box contains 15 green and 10 yellow ba...

A box contains `15` green and `10` yellow balls. If `10` balls are randomly drawn, one-by-one, with replacement, then the variance of the number of green balls drawn is : (a) `12/5` (b) `6` (c) `4` (d) `6/25`

`(6)/(25)`

`(12)/(5)`

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