Question
If a+1/a =9, then a5+1/a5 is equal
to:Solution
a + (1/a) = 9 = ( a² + 1/a² ) = (9) ² - 2 = 81 - 2 = 79 (a³ + 1/a³ ) = (a+1/a)3 -3(a+1/a) ⇒ (a³ + 1/a³ ) = (9)3 - (3 x 9) = 729 - 27 = 702 a5+ (1/a5) = (a² + 1/a²) x (a³ + 1/a³) - (a + 1/a) =79 x 702-9 =15134-7 = 55458-7 =55451  The correct answer is 55451.
Amit sold an article for ₹369.60 after allowing 12% discount on the marked price. Had he not allowed any discount he would have earned a profit of 20%...
A purchased an article and sold it to B at 12.5% profit. B marked it up by 10% above the price at which A has purchased it and then sold it after giving...
A Rs 750 tin of cheese is offered at 8% discount and a Rs 1,250 tin of butter at 20% discount. If we buy 5 tins of cheese and 3 tins of butter, what is...
Amit sold an electric iron for ₹ 5312 after giving a discount of 17% on the market price. Had he not given the discount, he would have earned a profit...
An item with a marked price of ₹4,000 was sold for ₹3,492 after a discount of y% was offered. What was the value of y?
-A shopkeeper bought an article marked it 80% above the cost price and sold it after giving a discount of 25%. Had he bought it for Rs 400 less and sold...
Find the single discount rate percentage equivalent to the successive discounts of 10%, 20% and 20%.
The list price of an article is Rs.240 and a customer buys it for Rs.120 after two successive discounts. If the first discount is 20% then find the othe...
A retailer provides 1 article free on the purchase of 4 articles. Calculate the discount percentage given by the retailer.
If the shopkeeper sells an item at Rs 1000 which is marked as Rs 1250, then what is the discount he is offering?