There are 10 boxes each containing 6 white and 7 red balls. Two random boxes are chosen, one ball is drawn simultaneously at random
from each and transferred to the other box. Now a box is again chosen
from the 10 boxes and a ball is chosen from it. Then the probability
that this ball is white is
(A) 6/13 (B) 7/13 (C) 5/13 (D) none of these
There are 10 boxes each containing 6 white and 7 red balls. Two random boxes are chosen, one ball is drawn simultaneously at random
from each and transferred to the other box. Now a box is again chosen
from the 10 boxes and a ball is chosen from it. Then the probability
that this ball is white is
(A) 6/13 (B) 7/13 (C) 5/13 (D) none of these
from each and transferred to the other box. Now a box is again chosen
from the 10 boxes and a ball is chosen from it. Then the probability
that this ball is white is
(A) 6/13 (B) 7/13 (C) 5/13 (D) none of these
rabi sigh , 7 Years ago
Grade 11
