Question
If two dice are thrown together, what is the probability
of getting an even number on one dice and an odd number on the other dice?Solution
Let E be the event of getting an even number on one die and an odd number on the other E = {( (1,2) (1,4) (1,6) (2,1) (2,3) (2,5) (3,2) (3,4) (3,6) (4,1) (4,3) (4,5) (5,2) (5,4) (5,6) (6,1) (6,3) (6,5)} So, n (E) = 18 n(E) / n(S) = 18/36 = ½.
A trader marked an article 80% above its cost price and sold it after allowing a discount of 40%. If the transaction resulted in a profit of Rs. 22, the...
A Shopkeeper sold an article at 20% loss. If he had sold it for Rs. 420/- more, he would have made 40% profit, find the selling price of the article?
C and D invest in a business in a ratio of 4:5. If 10% of the total profit goes to charity and D's share is Rs.900 after the donation, what is the total...
Cost price of a bag is Rs.500. The shopkeeper marked it 60% above the cost price and sold it after giving a discount of 22%. If the shopkeeper had sold ...
The price of an article marked at 25% above cost price is sold at a profit of 20%. If it were to be sold at a discount of 20%, ind the percentage decrea...
If the ratio of marked price and selling price of an article is 13:10. Shopkeeper earned 25% profit. If the difference between marked price and cost pri...
An article is initially marked 22% above its cost price. After offering a discount of ₹210 on the marked price, the seller earns a profit of 8%. What ...
Merchant bought 60 sheep at Rs. 120 per sheep. He sold 40 of them at Rs. 150 each. 10 of them died. What should be the selling price of the remaining s...
A bought a laptop for Rs.15000. He spent 15% of the amount that he had paid for buying it for its repair. He then sold the laptop to B and earned a prof...
A Publisher published 2500 books for Rs. 175000. He gave 400 books free as samples to some books shops, besides he was able to sell 2/3rd of the remaini...
