Question
Two cards are drawn at random from a pack of 52 cards.
What is the probability that either both are black or both are queens?Solution
N(S) = 52C2 = 1326 Let A be the event of getting two Black cards And B be the event of getting two queens And (A∩B) be the event of getting two black queens ∴ P(A) = 26C2 , P(B) = 4C2 , P(A∩B) = 2C2 ∴ P(A) = 26C2 /52C2 , P(B)= 4C2/52C2 , P(A∩B) = 2C2/52C2 Required Probability = P(A) + P(B) - P(A∩B) = 26C2 /52C2 + 4C2/52C2 - 2C2/52C2 = 325/1326 + 6/1326 + 1/1326 = 330/1326= 55/221
Statements: U > H ≥ W; S > T ≥ B; S < H; C ≤ D = U
Conclusions:
I. D > B
II. T < U
III. W ≤ D
Statements: X > O > D; T > M ≥ O; X > R
Conclusions:
I. T > R
II. R < DStatements: E $ N, N * G, H % E
Conclusions: a) G # H Â Â Â b) H $ N
If '>' denotes '+', '<' denotes '-', '-' denotes '×', '×' denotes '÷', '÷' denotes '=', then choose the correct statement of the following.
...Statements:
E ≤ A > J ≥ L; Y > J < D
Conclusions:
I. D > L
II. A > L
Statements: E = L ≤ G < I = H; E ≥ N < A; W ≥ P ≥ M > I
Conclusions:
I. E < W
II. A ≥ M
III. N < P
Statements:
P < Q < R < S ≤ B < H; S > N ≥ Y
Conclusions:
I) P < Y
II) R ≥ N
In these questions, relationship between different elements is shown in the statements. The statements are followed by conclusions.
Statements:...
In the question, assume the given statements to be true. Find which of the following conclusion(s) among the three conclusions is/ are definitely true ...
Statements: Q > M ≤ F < H; V = A > M > P; Z < I < P
Conclusions:
 I. H ≥ Z
II. I < Q
III. V = I