to enroll in courses, follow best educators, interact with the community and track your progress.
19 lessons,
3h 24m
Enroll
1.6k
Arithmetic Progression - 1
7,008 plays

More
AP part - 1

## Bharat Gupta is teaching live on Unacademy Plus

U
tqsm for ur response plz keep on viewing my vdos 😊
A
Hi Sir, For 2 APs a1,a2,a3.....an AND b1,b2,b3.....bn, I am finding it NOT TO BE in AP, in CASE OF MULTIPLICATION I took AP1 (eg: 1,2,3,4) and AP2 (eg: 5,6,7,8) AP3 (a1b1, a2b2, a3b3, a4b4) = (5,12,21,32) which is not in AP Although their Common Difference i.e. 7,9,11 are in AP AP3 though would be a Sequence as it follows a Pattern. Could you please confirm. Regards
I cannot find phi(N) methpd.. can you plz help me out
A
Akshat
4 months 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
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