Question

11
Arithmatic Progression
171
EXERCISE 1(C)
1. How many terms of the series 42. 36. 30.....amount to 150 ?
2. How many terms of the series 2 + 4 + 6 +..... amount to 42 ?
3. How many terms of the series 17.15, 13..... amount to 72 ?
4. What is the number of terms in the series 5. 7. 9..... if its sum is 1.020 ?
[Ans. 10 or 51
(Ans. 6]
[Ans. 6 or 12]
[Ans. n = 301​

Answer 1

Answer:

...........

[Ans. 10 or 51

(Ans. 6]

[Ans. 6 or 12]

[Ans. n = 301