Question
A coin is tossed 3 times. ‘A’ wins if exactly two heads
occur. Find the probability of ‘A’ winning the game.Solution
Total number of outcomes = 2 3 = 8
Favourable outcomes = C(3,2) = 3
Probability that ‘A’ wins = 3/8
After increase in the price of coffee by 20 %, a person is able to buy 4 kg less for Rs. 1,440. Find the original and increased price of the coffee per ...
Pankaj gives 15% of her salary to his wife, 5% of the remaining amount to his children and 20% of the remaining to his parents. If Pankaj is left with R...
Tim spends 22% of his monthly income in travelling. He spends 25% of his monthly income on household expenses and spends 36% of his monthly income on fa...
A gave 60% of amount to B. B gave 20% of amount received from A to C. If amount received by C from B is Rs.192, then find the amount received by B from A.
- Suppose 40% of ‘p’ is same as twice 80% of ‘q’. If ‘p’ is 75% of 640, find the value of ‘q’.
Anita spends 75% of her monthly salary and receives a commission of 5% on her salary every month. If her annual saving is Rs. 129600, find the commissio...
What is the total number of students in a college?
Statement I. In the college 24% of the students are between 18 to 24 years of age, and 45% of...
A jacket originally priced at ₹3,000 is on sale for 20% off. If a 5% sales tax is applied after the discount, what is the final price of the jacket?
- In a town, 30% of the population is ineligible to vote. Among those eligible, 50% are women. If 2/5 of eligible men and 1/5 of eligible women voted, find t...
A candidate who gets 22% marks fails by 10 marks but another candidate who gets 40% marks gets 14% more than the passing marks. Find the maximum marks.
