Question
A container has 15 brown, 10 gray and 5 gold coins. Two
coins are randomly chosen from the container, what is the probability that a brown and a gold coin are drawn?Solution
The probability that a brown and a gold coin are drawn = (15C1 × 5C1)/30C2
= (15 × 5)/435 = 75/435 = 5/29
If the angular diameter of the sun is 20, how far from the eye a coin of radius 3.3 cm be kept to hide the sun?
Find the mode of the data: 2, 2, 3, 5, 15, 15, 15, 20, 21, 23, 25, 15, 23, 25.
The median of the following data will be ___
32,25,33,27,35,29,14,26 and 30.
What is the median of the following list of numbers: 5, 3, 6, 9, 11, 19,12,20, and 1?
Meera buys a laptop and sells it to Sneha at a profit of 25%. Sneha then sells it to Tushar at a loss of 10%. If Tushar buys the laptop for Rs. 36,450, ...
24, 29, 62, ?, 758, 3791
...The sum of total surface area of two cubes is 1248-centimeter square. If the product of the length of their edges is 96 centimeter square. Find the diff...
A spent 36% and 25% of his monthly salary on food and rent, respectively. Of the remaining amount, he gave 25% and 40% to his mother and brother, respec...
Find the mode for the given distribution.
(rounded off to two decimal places).
BMC Catering Services has divided its fee structure into two components: a fixed fee and a variable fee, which depends on the number of plates ordered. ...
Relevant for Exams:
