CA Foundation | Quantitative Aptitude | Sequence and Series Exercise 6 A | ICAI Module Solutions

CA Foundation Chapter - 6 : SEQUENCE AND SERIES (Exercise A, Chapter 6 - ICAI Study material) This video explains the solution of all the problems of Exercise A of Sequence and Series (Chapter 6 in CA Foundation Quantitative Aptitude study material book provided by ICAI). Click the time stamp to jump to the required question's solution, or watch it all :- 00:00 Intro 00:06 Question 1 - What is the nth element of the sequence 1, 3, 5, 7 .....? 01:26 Question 2 - What is the nth element of the sequence -1, 2, -4, 8 ......? 03:51 Question 3 - How can ∑_(i=4)^(7) root()(2i-1) be written as ? 05:08 Question 4 - How can the sum to ∞ of the series -5, 25, -125, 625 ......can be written as ? 06:33 Question 5 - What are the first three terms of sequence when nth term tₙ is n² - 2n ? 07:40 Question 6 - Which terms of the progression -1, -3, -5 ..... is -39 ? 09:39 Question 7 - What is the value of x such that 8x + 4, 6x - 2, 2x + 7 will form an arithmetic progression ? 10:59 Question 8 - What is the rᵗʰ term of an arithmetic progression if mᵗʰ term is n and nᵗʰ term is m ? 14:02 Question 9 - What is the number of terms of the series 10 + 9⅔ + 9⅓ + 9 + .......that will amount to 155 ? 19:16 Question 10 - What is the nᵗʰ term of the series whose sum to n terms is 5n² + 2n ? 21:25 Question 11 - What is the 20ᵗʰ term of the progression 1, 4, 7, 10 .....? 22:34 Question 12 - What is the last term of the series 5, 7, 9, .... to 21 terms ? 23:44 Question 13 - What is the last term of the arithmetic progression 0.6, 1.2, 1.8 ..... to 13 terms ? 25:00 Question 14 - What is the sum of the series 9, 5, 1, ..... to 100 terms ? 26:44 Question 15 - What are the two arithmetic means between -6 and 14 ? 28:45 Question 16 - Find the integers if the sum of three integers in arithmetic progression is 15 and their product is 80 ? 30:20 Question 17 - Find the series if the sum of n terms of an arithmetic progression is 3n² + 5n ? 32:40 Question 18 - What are the number of numbers between 74 and 25,556 divisible by 5 ? 34:39 Question 19 - What is the sum of first n terms of the arithmetic progression if the pth terms of an arithmetic progression is (3p - 1)/6 37:22 Question 20 - What is the arithmetic mean between 33 and 77 ? 37:59 Question 21 - Which are the four arithmetic means between -2 and 23 ? 39:38 Question 22 - What is the 3rd term of the arithmetic progression if the first term of an arithmetic progression is 14 and the sums of the first five terms and the first ten terms are equal in magnitude but opposite in sign ? 42:45 Question 23 - What are the number of terms if the sum of a certain number of terms of and arithmetic progression series -8, -6, -4, ..... is 52 ? 45:17 Question 24 - What are the number of terms if the first and the last term of an arithmetic progression are -4 and 146 ? 46:33 Question 25 - What is the sum of the series 3½ + 7 + 10½ + .....to 17 terms ? 48:23 End Screen #mathsplatter #cafoundation #quantitativeaptitude