Question
A bag contains 4 white balls, 9 red balls, and 5 green
balls. Two balls are drawn at random. Find the probability that the two balls are red.Solution
Number of ways of selecting two red balls = 9 Câ‚‚
Total number of balls = 4 + 9 + 5 = 18
Number of ways of selecting two balls = 18 Câ‚‚
Probability = 9 C₂ ÷ 18 C₂ = (9 × 8) ÷ (18 × 17) = 72 ÷ 306 = 4/17
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 ...
Statements: I > E ≥ F; G < D ≤ I; J < E ≤ H
Conclusions:
I. G < E
II. H ≥ F
III. E < D
Statements:M > N,N < O,O < P
Conclusions: I. M ≥ P II. O > M
Each of the vowel in the word REQUIRE is changed to the next letter in the English alphabetical series and each consonant is changed to the previous let...
Statements:
A < B < Z < K ≤ B < H; K > N ≥ P
Conclusions:
I) A < P
II) Z ≥ N
Which of the following expressions will be true if the expression Q ≥ M = R > F = E ≤ X is definitely true?
Statements: Z > X > D > H ≤ M ≥ N = G
Conclusion
I: M > X
II: H > Z
Statements: M ≥ S, V ≤ S, O < N > J, V < O
Conclusion:
I. S > J
II. N ≥ V
Statements: T ≤ Q > B = W, Q ≥ E ≥ H
Conclusion:
I. B > H
II. T ≥ E
III. H = W
In which of the following expression will the expression ‘Q > T’ be definitely false?
