18. 150 workers were engaged to finish a job in a certain number of days. 4 workers dropped out on second day, 4 more workers dropped out on third day and so on. It took 8 more days to finish…
17. A manufacturer reckons that the value of a machine, which costs him Rs. 15625, will depreciate each year by 20%. Find the estimated value at the end of 5 years. Sequences and Series Miscellaneous Exercise Previous Next Class 11…
16. A man deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in 15th year since he deposited the amount and also calculate the total amount after 20 years. Sequences and Series…
15. A person writes a letter to four of his friends. He asks each one of them to copy the letter and mail to four different persons with instruction that they move the chain similarly. Assuming that the chain is…
14. Shamshad Ali buys a scooter for Rs 22000. He pays Rs 4000 cash and agrees to pay the balance in annual installment of Rs 1000 plus 10% interest on the unpaid amount. How much will the scooter cost him?…
13. A farmer buys a used tractor for Rs 12000. He pays Rs 6000 cash and agrees to pay the balance in annual installments of Rs 500 plus 12% interest on the unpaid amount. How much will the tractor cost…
12. Find the 20th term of the series 2×4 + 4×6 + 6×8 + … + n terms. Sequences and Series Miscellaneous Exercise Previous Next Class 11 Sequences and Series Miscellaneous Exercise 1. If f is a function satisfying f(x+y)=f(x)f(y) for…
11. Find the sum of the following series up to n terms:(i) 5+55+555+ …….… (ii) .6+.66+.666+………….. Sequences and Series Miscellaneous Exercise Previous Next Class 11 Sequences and Series Miscellaneous Exercise 1. If f is a function satisfying f(x+y)=f(x)f(y) for all x,y∈N…
10. The ratio of the A.M. and G.M. of two positive numbers a and b is m : n. Show that (a:b=(m+sqrt{m^2-n^2}):(m-sqrt{m^2-n^2 })). Sequences and Series Miscellaneous Exercise Previous Next Class 11 Sequences and Series Miscellaneous Exercise 1. If f is…
9. If a and b are the roots of (x^2–3x+p=0) and c, d are roots of (x^2–12x+q=0), where a,b,c,d form a G.P. Prove that (q+p) : (q–p) = 17:15. Sequences and Series Miscellaneous Exercise Previous Next Class 11 Sequences and…
