Question
A bag contains (K - 2) red balls, 8 black balls, and 14
blue balls. If two balls are drawn randomly, the probability that both are black is 2/27. Calculate 180% of the difference between the number of red and blue balls.Solution
Let total number of balls in the bag = a So according to question, 8C2 / aC2 = 2/27 (8 x 7) / a x (a – 1) = 2/27 So, a x (a – 1) = 28 x 27 So total number of balls in the bag = 28 balls So number of red balls = 28 – (14 + 8) = 6 Required value = 180% x (14 – 6) = 14.4 Hence answer is option E
Statements: I = E ≥ A; L ≥ K ≥ B ≥ M ≥ E
Conclusions:
I. B ≥ I
II. I < L
III. K ≥ A
Statements : M > J = L > O > I ≤ H < Q = N
Conclusions :
I. I > M
II. N > I
III. L < Q
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and t...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and ...
Statements: L > M > Z ≥ S < R = O < N
ConclusionÂ
I. N ≥ L                Â
II. L > S
...Statements: D = E ≥ G = K, O > B ≤ C = K, E ≤ I < F
Conclusions: I. K > O II. D ≥ C
...Statements: M % C & G @ T $ D; W % M # P
Conclusions :Â Â Â Â Â I. D % CÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. M % GÂ Â Â Â Â Â Â Â Â Â Â Â Â I...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and t...
I n the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and ...
Which of the following symbols should be placed in the blank spaces (_) respectively (in the same order from left to right) to complete the given expres...
