Question
In an election, a voter may vote for any number of
candidates not greater than the number to be chosen. There are 8 candidates and 5 members are to be chosen. In how many way can a person vote?Solution
A voter may cast vote for either 1 candidate or 2 candidates or 3 candidates or 4 candidates or 5 candidates out of 8. The voter may cast vote for 1 candidate in 8C1 ways = 8 The voter may cast vote for 2 candidate in 8C2 ways = 28 The voter may cast vote for 3 candidate in 8C3 ways = 56 The voter may cast vote for 4 candidate in 8C4 ways = 70 The voter may cast vote for 5 candidate in 8C5 ways = 56 Total ways = 218
A shopkeeper marks his goods at 40% above the cost price and gives a discount of 20%. Find his profit percentage.
Ajay and Vijay sold their Bikes at Rs 48400 each but Ajay incurred a loss of 20%, while Vijay gained 10%. What is the ratio of the cost price of the Bik...
A shopkeeper allows two consecutive discounts of 20% and 25% on an article and still he makes a profit of 32% by selling it. He would make Rs.2332 less ...
The cost of item X is Rs. 150, while the cost of item Y is 36% greater than that of item X. Item X is sold at a profit of 8%, and...
Profit percentage received on a product when sold for Rs.450 is equal to the percentage loss incurred when the same product is sold for Rs.300. Find the...
The cost price of two dozen bananas is Rs. 48 after selling 9 bananas at the rate of Rs. 18 per dozen, the shopkeeper reduced to rate of Rs. 12 per doze...
The ratio of the cost price and marked price of an article is 4:7, respectively. The article is sold after giving a discount of Rs. 800 such that there ...
The combined cost price of two products, P and Q, is Rs. 5000. Product P is marked up by 25% on its cost and Product Q is marked up by 40%. After giving...
The cost price of two articles is same. One article is sold at 40% profit and another at 10% loss. If the selling price of one article is Rs. 700 more t...
A pen costs Rs. 6 each, and a marker costs Rs. 5 each. A person purchased some pens and markers for a total of Rs. 100. In how many ways could he have b...