# CPT Chapter AP and GP With Anand.Duration:4hrs45min

 AP & GP Duration (min:sec) Basics of AP & GP Overview of AP & GP 07:41 What is AP & GP 06:15 AP Series and Formula 06:40 GP Series and Formula 03:45 AP Index 03:05 AP Formula 07:05 Finding n terms 13:18 AM 24:10 Sum of AP 32:52 Sum of Natural Numbers 16:15 AP Misc. Problem 22:22 Working with consecutive numbers 03:08 Summary 02:25 GP Index 04:31 GP Formula 01:34 Finding n terms 07:46 GM 13:01 Sum of GP 14:29 3 numbers in GP 09:05 m&n terms problem 10:36 Infinity problem 36:23 Summary 01:55 AP & GP Combined AP & GP Combined 17:35 Practical Problem on AP& GP 18:00 Conclusion 01:24 Total 04:45:20

Few below things we have covered

What is AP & GP?
AP
GP
AP & GP Combined
Practical problem AP & GP

Formula
Finding term
Arithmetic Mean
Sum of AP
Sum of Natural Number
Misc Problem

Finding nth term -

The nth element of the sequence 1, 3, 5, 7,...is
(a) n
(b) 2n – 1
(c) 2n +1
(d) none of these

The last term of the series 5, 7, 9,..... to 21 terms is
(a) 44
(b) 43
(c) 45
(d) none of these

if 8th term of an A.P is 15, then sum of its 15 terms is
(a) 15
(b) 0
(c) 225
(d) 225/2

If the sum of n terms of an A.P be 2n2 + 5n, then its 'nth' term is
(a) 4n - 2
(b) 3n - 4
(c) 4n + 3
(d) 3n + 4

Inserting AM between 2 Numbers -
Insert 4 AM between -2 and 23

(a) 3, 13, 8, 18
(b) 18, 3, 8, 13
(c) 3, 8, 13, 18
(d) none of these

GP -
Formula
Finding term
Geometric Mean (GM)
Sum of GP
Three numbers
m and n term problem

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