Category: Ncert

15. A person writes a letter to four of his friends. He asks each one of them to

14. Shamshad Ali buys a scooter for Rs 22000. He pays Rs 4000 cash and agrees to pay

13. A farmer buys a used tractor for Rs 12000. He pays Rs 6000 cash and agrees to

12. Find the 20th term of the series 2×4 + 4×6 + 6×8 + … + n terms.

11. Find the sum of the following series up to n terms:(i) 5+55+555+ …….… (ii) .6+.66+.666+………….. Sequences and

10. The ratio of the A.M. and G.M. of two positive numbers a and b is m :

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

8. If a,b,c,d are in G.P, prove that ((a^n+b^n )),((b^n+c^n )),((c^n+d^n)) are in G.P. Sequences and Series Miscellaneous

7. Let S be the sum, P the product and R the sum of reciprocals of n terms

6. If (frac{a+bx}{a-bx}=)(frac{b+cx}{b-cx}=)(frac{c+dx}{c-dx}) (x≠0), then show that a,b,c and d are in G.P. Sequences and Series Miscellaneous Exercise