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Quantity I: Total balls = 5 + 7 + 8 = 20 Favorable outcomes for two green balls = 8C2 = (8 * 7) / (2 * 1) = 28 Total outcomes for drawing two balls = 20C2 = (20 * 19) / (2 * 1) = 190 Probability = 28 / 190 = 0.147 Quantity II: Total balls = 4 + 6 + 10 = 20 Favorable outcomes for three blue balls = 10C3 = (10 * 9 * 8) / (3 * 2 * 1) = 120 Total outcomes for drawing three balls = 20C3 = (20 * 19 * 18) / (3 * 2 * 1) = 1140 Probability = 120 / 1140 = 0.105 Answer: E (Quantity I > Quantity II)
A water tap fills a tub in 'p' hours and a sink at the bottom empties it in 'q' hours. If p < q and both tap and sink are open, the tank is filled in...
If A borrowed Rs. P at x% and B borrowed Rs. Q (>P) at y% per annum at simple interest at the same time, then the amount of their debts will be equal...
In an examination 73%of the candidates passed in quantitative aptitude test, 70% passed in General awareness and 64% passed in both. If 6300 failed in b...
`2/5` ___ 15 ___ 115___ 20 ___ 4 = 581
A box contains 6 blue shirts, 7 yellow shirts and 9 pink shirts. In how many ways can 4 shirts be drawn from the box, if at least one blue shirt, one ye...
3,000 ___ 15 ___ 4 ___ (20)² ___ 20 = 32,200
If '+' means '-', '-' means '+', '×' means '÷', and '÷' means '×', then the value of 42 – 12 × 3 + 8 ÷ 2 + ...
A man invested a sum of money at compound interest. It amounted to Rs. 2420 in 2 years and to Rs. 2662 in 3 years. Find the sum.