to enroll in courses, follow best educators, interact with the community and track your progress.
19 lessons,
3h 24m
Enroll
1.2k
Arithmetic Progression - 1
4,294 plays

More
AP part - 1

## Bharat Gupta is teaching live on Unacademy Plus

Bharat Gupta
Engineer by degree Mathematician by Heart. Having 22 years of teaching experience. Search me on Youtube for more videos.

U
Great work ma'am......really outstanding work
I cannot find phi(N) methpd.. can you plz help me out
A
Akshat
6 hours ago
could you give an example of calculating last term through the formula Sn - Sn-1?
could you give an example of calculating last term through the formula Sn - Sn-1?
sir at 7:00, after solving by putting correct value of f(4x), the answer comes option a.) 0 sir kindly cross check it whether I get right ans or not. thanks in advance
sorry sir.. this comment was for lesson 9 (GP class 4)
1. SEQUENCE AND SERIES Class -I (Arithmetic Progression)

2. ARITHMETIC PROGRESSION A sequence whose terms increase or decrease by a fixed number is called an arithmetic progression. The fixed number is called the common difference of the A. P. In an A. P, we usually denote the first term by a, the common difference by d and the nth term by tn. oe, 4 , 13 - r ena m-2

3. nth term of an Arithmetic Progression d. 2 a Point to remember

4. Sum of n term of an Arithmetic Progression d. 2 a

5. Sum of n term of an Arithmetic Progression d. 2 a ola

6. Properties of Arithmetic Progression LM A

7. Properties of Arithmetic Progression , aa -- n and b bn

8. Properties of Arithmetic Progression 3, 11, IS, 19, 23, 27, , 3S, 39, 43 , 43' SI

9. If the pth term of an A. P. is q and the qth term is p, then its (p+q)th term is a. O b. p q c. p+q d. none of these

10. If the pth term of an A. P. is q and the qth term is p, then its (p+q)th term is a. O b. p q c. p+q d. none of these he d -J

11. The number of numbers lying between 100 and 500 that are divisible by 7 but not by 21 is a. 57 b. 19 . 38 d. none of these