Question
A coin is tossed 5 times. ‘A’ wins the game if exactly
3 heads appear. Otherwise, ‘B’ wins. What is the probability that ‘A’ wins?Solution
Total number of outcomes = 2 5 = 32
Favourable outcomes = C(5,3) = 10
Probability that ‘A’ wins = 10/32 = 5/16
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 3 : 4 : 5 : 6. if the loss i...
Find the third proportion of 12.5 and 16.
A sum of Rs. 642 is divided among X, Y and Z such that X gets Rs. 144 more than Y. Y gets Rs. 90 more than Z. Find the share of Z?
A sum of Rs. 597 is divided among X, Y and Z such that X gets Rs. 106 more than Y. Y gets Rs. 58 more than Z. Find the share of Z?
A sum of Rs.10600 is to be divided among 6 brothers, 5 sisters and 3 aunts. If each sister receives four times as much as each aunt and each brother rec...
Monthly savings of ‘Q’ is 20% more than that of ‘P’ and is 54% less than monthly income of ‘P’. Monthly expenditure of ‘Q’ is Rs. 5730 a...
Rs. 7,20,000 is divided among 132 men and women. The ratio of total amount received by men and women is 5 : 4. But the ratio of money received by each m...
Rs 1400 was divided among Anil, Bhanu and Charan in the ratio of 9:5:11 respectively. Find the amount received by Anil and Bhanu together.
Marks scored by A and B in a test are in the ratio 13:6 respectively. If B had scored 4 more marks, then marks scored by A would be 30% more than that o...
Find the fourth proportion of (3k + 3), (6k + 6) and (9k + 9). (Note: 'k' is the largest single-digit composite number.)
Relevant for Exams:
