Question
If a + 1/a = -2 then the value of a1000 +
a- 1000 isSolution
a + 1/a = –2 let a = -1 -1 + = 1/-1+-1 = -2 ∴ a = −1 a 1000 + a−1000 = (−1) 1000 + (−1)−1000 = 1 + 1 = 2
Rahul invested a certain amount at a simple interest rate of 8% per annum, and after 6 years, it grew to Rs. 1,850. If he had instead invested the same ...
What will be the net CI on Rs. 8000 for 4 years at 20% p.a compounded annually?
- Priya invests a sum of money at an annual compound interest rate of 8%. After 4 years, the interest accumulated is Rs. 1120. If she increases her initial i...
A certain sum of money becomes 5000 in 6 years and Rs. 6240 in 10 years at any certain rate of simple interest. Find the principal amount.
- If Rs. 80,000 is invested at 9% per annum simple interest for 6 years, how much amount will be received in the end?
Shivam invested 24000 at 15% p.a. simple interest for ‘x’ months. If at the end of ‘x’ months, he received a total amount of Rs.26400. What is t...
Simple interest and compound interest (compounded annually) earned on a sum at the end of 2 years at a certain rate of interest p.a. are Rs. 3500 and Rs...
A sofa of MRP 1500 is available in Rs.300 cash down payment and 9 monthly equal installment of Rs.150 each. Find the rate of interest per annum.
Rs. 6,600 is invested in scheme ‘A’ offering simple interest of 13% p.a. and Rs. 2500 in scheme ‘B’ offering simple interest of 4% p.a. What is ...
Puneet invested Rs. 28,000 for 4.5 years, while Qureshi invested Rs. 8,000 more than Puneet for a duration of 3.5 years in a business. If their combined...
Relevant for Exams:
