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Test: Arithmetic And Geometric Progressions - 2 - CA Foundation MCQ


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30 Questions MCQ Test Quantitative Aptitude for CA Foundation - Test: Arithmetic And Geometric Progressions - 2

Test: Arithmetic And Geometric Progressions - 2 for CA Foundation 2024 is part of Quantitative Aptitude for CA Foundation preparation. The Test: Arithmetic And Geometric Progressions - 2 questions and answers have been prepared according to the CA Foundation exam syllabus.The Test: Arithmetic And Geometric Progressions - 2 MCQs are made for CA Foundation 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Arithmetic And Geometric Progressions - 2 below.
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Test: Arithmetic And Geometric Progressions - 2 - Question 1

​Sum of n terms of the series 0.1 + 0.11 + 0.111 + … is

Test: Arithmetic And Geometric Progressions - 2 - Question 2

The sum of the first 20 terms of a G. P is 244 times the sum of its first 10 terms. The common ratio is

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Test: Arithmetic And Geometric Progressions - 2 - Question 3

Sum of the series 1 + 3 + 9 + 27 +….is 364. The number of terms is

Test: Arithmetic And Geometric Progressions - 2 - Question 4

The product of 3 numbers in G P is 729 and the sum of squares is 819. The numbers are

Test: Arithmetic And Geometric Progressions - 2 - Question 5

The sum of the series 1 + 2 + 4 + 8 + .. to n term

Detailed Solution for Test: Arithmetic And Geometric Progressions - 2 - Question 5

Important Notes on GP Sum:The sum of GP (of n terms) is: Sn = a(rn - 1) / (r - 1) 
a = 1 , r = 2
Sn = a(rn - 1) / (r - 1) 
Sn = (1) x (2n - 1) / (2 - 1)
Sn = 2n - 1

Test: Arithmetic And Geometric Progressions - 2 - Question 6

The sum of the infinite GP 14 – 2 + 2/7 – 2/49 + … is

Test: Arithmetic And Geometric Progressions - 2 - Question 7

The sum of the infinite G. P. 1 - 1/3 + 1/9 - 1/27 +... is

Test: Arithmetic And Geometric Progressions - 2 - Question 8

The number of terms to be taken so that 1 + 2 + 4 + 8 + will be 8191 is

Detailed Solution for Test: Arithmetic And Geometric Progressions - 2 - Question 8

If you're talking about geometric series:

a = 1

r = 2/1 = 4/2 = 8/4 = 2

S(n) = a(1 - r^n) / (1 - r)

a(1 - r^n) / (1 - r) = 8191

1(1 - 2^n) / (1 - 2) = 8191

(1 - 2^n) / (-1) = 8191

1 - 2^n = 8191 * (-1)

1 - 2^n = -8191

-2^n = -8191 - 1

-2^n = -8192

2^n = 8192

n = log (base 2) of 8192

n = 13

Test: Arithmetic And Geometric Progressions - 2 - Question 9

Four geometric means between 4 and 972 are

Detailed Solution for Test: Arithmetic And Geometric Progressions - 2 - Question 9

Let t1 = 4, t2, t3, t4, t5, t6 = 972 be the sequence.
Then; t6 = 972 ⇒ ar5 = 972 ⇒ 4r5 = 972
⇒ r5 = 243 = 35 
⇒ r = 3
Hence the arithmetic means between 4 and 972 are 12, 36, 108, 324.

Test: Arithmetic And Geometric Progressions - 2 - Question 10

Three numbers are in AP and their sum is 21. If 1, 5, 15 are added to them respectively, they form a G. P. The numbers are

Test: Arithmetic And Geometric Progressions - 2 - Question 11

The sum of 1 + 1/3 + 1/32 + 1/33 + … + 1/3 n –1 is

Detailed Solution for Test: Arithmetic And Geometric Progressions - 2 - Question 11

Test: Arithmetic And Geometric Progressions - 2 - Question 12

The sum of the infinite series 1 + 2/3 + 4/9 + .. is

*Multiple options can be correct
Test: Arithmetic And Geometric Progressions - 2 - Question 13

The sum of the first two terms of a G.P. is 5/3 and the sum to infinity of the series is 3. The common ratio is

Test: Arithmetic And Geometric Progressions - 2 - Question 14

If p, q and r are in A.P. and x, y, z are in G.P. then xq–r. y r–p. zp–q is equal to

*Multiple options can be correct
Test: Arithmetic And Geometric Progressions - 2 - Question 15

The sum of three numbers in G.P. is 70. If the two extremes by multiplied each by 4 and the mean by 5, the products are in AP. The numbers are

*Multiple options can be correct
Test: Arithmetic And Geometric Progressions - 2 - Question 16

The sum of 3 numbers in A.P. is 15. If 1, 4 and 19 be added to them respectively, the results are is G. P. The numbers are

Test: Arithmetic And Geometric Progressions - 2 - Question 17

Given x, y, z are in G.P. and xp = yq = zσ, then 1/p , 1/q, 1/σ are in

Test: Arithmetic And Geometric Progressions - 2 - Question 18

If the terms 2x, (x+10) and (3x+2) be in A.P., the value of x is

Detailed Solution for Test: Arithmetic And Geometric Progressions - 2 - Question 18

2b=a+c
2x+3x+2=2(x+10)
5x+2=2x+20
3x=18
x=6

Test: Arithmetic And Geometric Progressions - 2 - Question 19

If A be the A.M. of two positive unequal quantities x and y and G be their G. M, then

Test: Arithmetic And Geometric Progressions - 2 - Question 20

The A.M. of two positive numbers is 40 and their G. M. is 24. The numbers are

Test: Arithmetic And Geometric Progressions - 2 - Question 21

Three numbers are in A.P. and their sum is 15. If 8, 6, 4 be added to them respectively, the numbers are in G.P. The numbers are

Test: Arithmetic And Geometric Progressions - 2 - Question 22

The sum of four numbers in G. P. is 60 and the A.M. of the 1st and the last is 18. The numbers are

Test: Arithmetic And Geometric Progressions - 2 - Question 23

A sum of Rs. 6240 is paid off in 30 instalments such that each instalment is Rs. 10 more than the proceeding installment. The value of the 1st instalment is

Test: Arithmetic And Geometric Progressions - 2 - Question 24

The sum of 1.03 + (1.03)2 + (1.03)3 + …. to n terms is

Test: Arithmetic And Geometric Progressions - 2 - Question 25

If x, y, z are in A.P. and x, y, (z + 1) are in G.P. then

Test: Arithmetic And Geometric Progressions - 2 - Question 26

The numbers x, 8, y  are in G.P. and the numbers x, y, –8 are in A.P. The value of x and y are

Test: Arithmetic And Geometric Progressions - 2 - Question 27

The nth term of the series 16, 8, 4,…. Is 1/217. The value of n is

Test: Arithmetic And Geometric Progressions - 2 - Question 28

The sum of n terms of a G.P. whose first terms 1 and the common ratio is 1/2 , is equal to 

Test: Arithmetic And Geometric Progressions - 2 - Question 29

t4 of a G.P. in x, t10 = y and t16 = z. Then

Test: Arithmetic And Geometric Progressions - 2 - Question 30

If x, y, z are in G.P., then

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