A man starts repaying a loan as the first instalment of Rs 500. If he increases the instalment by Rs 25 every month, what, amount will he pay in the 30th instalment?
Solution:
Ramkali saved Rs 5 in the first week of a year and then increased her savings by Rs 1.75. If in the right week, her weekly savings become Rs 20.75, find n.
Solution:
Justify whether it is true to say that the following are the nth terms of an A.P.
(i) 2n – 3
(ii) n² + 1
Solution:
More Solutions:
- In an A.P. (with usual notations):
- The first term of an A.P. is 5, the last term is 45 and the sum is 400.
- How many terms of the A.P. 25, 22, 19, … are needed to give the sum 116
- Find the sum of first 22 terms, of an A.P. in which d = 7 and a22 is 149.
- If the sum of the first 6 terms of an A.P. is 36.
- If an = 3 – 4n, show that a1, a2, a3, … form an A.P.