Question
A bag contains a certain number of fruits of three
varieties: apple, orange, and banana. The total number of apples and oranges is 13, which is 5 more than the number of apples in the bag. If two fruits are drawn at random without replacement, the probability that the first fruit drawn is an apple and the second is a banana is 14/95. Find the total number of fruits in the bag.Solution
Number of apple = 13 – 5 = 8 Number of orange = 5 Number of banana = x 14/95 = 8/(13 + x) * x/(12 + x) 380x = 7 * (13 + x) * (12 + x) 380x = 7 * (156 + 13x + 12x + x2) 7x2 – 205x + 1092 = 0 7x2 – 49x – 156x + 1092 = 0 7x(x – 7) – 156(x – 7) = 0 x = 7, 22.28(not possible) Required total = 13 + 7 = 20
If 50 percent of the families in a certain city subscribe to the morning newspaper, 65 percent of the families subscribe to the afternoon newspaper and ...
The 'Special Drawing Right (SDR)' is an international reserve asset created by:
What is the primary theme of India’s Union Budget 2024-25?"
The Mundell-Fleming framework studies (A) _____ , (B) _________ economies in a world with (C) _____ financial markets and (D) _____ capital mobility
Which among the following are the recommendations of the Urjit Patel Committee report on monetary policy?
I. Curtailment of the fiscal deficit.
Under the Bretton wood system, the long-term development assistance was to be provided by
-
IBRD
...
-
If rxy = 0.75, then ryx will be:
When a firm operates with excess capacity
Relevant for Exams:
