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Kamal 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Write an equation for the nth term of the geometric sequence 3, 12, 48, 192,....?

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Tapas replied | 29/11/2016

Here, a = 3, and r = 4.
So, tn = a x r^(n-1) = 3 x 4^(n-1).

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Sarvajeet replied | 03/12/2016

Tn = a x (4 power (n-1)).

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Answer

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D

Disha 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the four arithmetic means between 16 and 91?

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Tapas replied | 29/11/2016

Here, the arithmetic means are p, q, r, and s.
So, 16, p, q, r, s, 91, ..... are in A. P. in which t1 = 16, and t6 = 91.
Solving , we can get, a = 16, d = 15.
so, p = 16 + 15 = 31, q = 31+15 = 46, r = 46 + 15 = 61, s = 61 + 15 = 76.
So, the arithmetic means are: 31, 46, 61, 76.

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Sarvajeet replied | 03/12/2016

31, 46, 61, 76.

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Answer

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M

Madhu 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the next four terms of arithmetic sequence: 12, 16, 20,....?

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Tapas replied | 29/11/2016

24, 28, 32, 36.

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Sarvajeet replied | 03/12/2016

24, 28, 32, 36.

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Answer

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S

Sensoph 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the 14th term of the sequence a1 = 3, d = 7?

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Tapas replied | 29/11/2016

For an arithmetic sequence: tn = a + (n-1)d = 3 + (14-1)7 = 3 + 13x7 = 94.

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Sarvajeet replied | 03/12/2016

94.

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Answer

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P

Probodh 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Which term is indicate by the number 20 in the arithmetic sequence: 8, 11, 14, 17, 20,...?

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Tapas replied | 29/11/2016

5th term.

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Sarvajeet replied | 03/12/2016

5th term.

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Answer

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S

Sanjay 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the formula for finding the sum of nth term?

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Sarvajeet replied | 03/12/2016

Sn=(n/2)(2a+(n-1)d).

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Answer

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A

Ashish 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the sum of each arithmetic series: 6 + 13 + 20 + 27 +...... + 97?

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Sarvajeet replied | 23/11/2016

Rs. 721.

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Answer

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N

Nabodit 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the sum of series: 18 + 22 + 26 + 30 +..... + 50?

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Sarvajeet replied | 03/12/2016

306.

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Answer

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V

Vishwa Nath 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the formula for arithmetic mean in sequence and series?

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Sarvajeet replied | 03/12/2016

a, b, c are in A. P.
b=(a+c)/2.

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Answer

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R

Ravikumar 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the 8th term of a geometric sequence for which a = -3 and r = -2?

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Richa replied | 19/11/2016

384

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Sarvajeet replied | 03/12/2016

384.

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Answer

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J

Joseph 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the next two terms of each geometric sequence: 20, 30, 45, ....?

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Tapas replied | 29/11/2016

Here, a = 20 and r = 30/20 = 45/30 = 3/2 = 1.5.
So, next two terms are, 45 x 1.5 = 67.5 and 67.5 x 1.5 = 101.25.

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Sarvajeet replied | 03/12/2016

67.5 and 101.25.

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Answer

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H

Harshitha 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Is the sequence 4, 5, 7, 10, 14,.... is arithmetic or not?

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Answer

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A

Atharva 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the three arithmetic means between 44 and 92?

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Answer

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S

Sonia 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the formula for finding the nth term of an even number and of an odd number?

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I

Iqbal 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find the first three terms of an arithmetic series in which a1 = 9, a(n)th = 105, s(n)th = 741?

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F

Franziska 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find 8th term of the series: a1 = 7, a(n)th = 79?

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S

Shail 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Is it true that doubling each term in an arithmetic series will be double the sum?

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N

Navam 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What do you mean by sequence and series in terms of mathematics?

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Answer

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N

Nayana 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the difference between arithmetic series and geometric series?

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Answer

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K

Keerthiga 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the formula for finding geometric mean?

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Answer

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A

Atim 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Define Harmonic progression?

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P

Prabhash 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the difference between A.P, G.P, H.P?

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N

Nice 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Find three geometric means between 225 and 576?

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N

Neha 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

What is the difference between geometric mean and arithmetic mean?

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Answer

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D

Deepak 05/11/2016 in  Class XI-XII Tuition (PUC), Mathematics(Class XI-XII Tuition (PUC)), Sequences and Series

Define geometric mean?

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Answer

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