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8. The sum of some terms of G.P. is 315 whose first term and the common ratio are 5 and 2, respectively. Find the last term and the number of terms.
27
Oct
8. The sum of some terms of G.P. is 315 whose first term and the common ratio are 5 and 2, respectively. Find the last term and the number of terms. 8. The sum of some terms of G.P. is 315 whose first term and the common ratio are 5 and 2 respectively. Find the [...]
13. How many terms of G.P. 3, 3^2 , 3^3 , … are needed to give the sum 120?
27
Oct
13. How many terms of G.P. 3, 3^2 , 3^3 , … are needed to give the sum 120? … are needed to give the sum 120? 13. How many terms of G.P. 3 3^2 33 October 27, 2021 Category: Chapter 9 - Sequences and Series , Maths , NCERT Exemplar Class 11 ,
12. The sum of first three terms of a G.P. is 39/10 and their product is 1. Find the common ratio and the terms
27
Oct
12. The sum of first three terms of a G.P. is 39/10 and their product is 1. Find the common ratio and the terms 12. The sum of first three terms of a G.P. is 39/10 and their product is 1. Find the common ratio and the terms October 27, 2021 Category: Chapter 9 - [...]
16. If a(1/b + 1/c),b(1/c + 1/a),c(1/a + 1/b) are in A.P., prove that a, b, c are in A.P
27
Oct
16. If a(1/b + 1/c),b(1/c + 1/a),c(1/a + 1/b) are in A.P., prove that a, b, c are in A.P 16. If a(1/b + 1/c) B b(1/c + 1/a) c are in A.P c(1/a + 1/b) are in A.P. prove that a October 27, 2021 Category: Chapter 9 - Sequences and Series , Maths , [...]
Tags:
16. If a(1/b + 1/c) ,
B ,
b(1/c + 1/a) ,
c are in A.P ,
c(1/a + 1/b) are in A.P. ,
prove that a ,
15. The p^th , q^th and r^th terms of an A.P. are a, b, c, respectively. Show that (q – r )a + (r – p )b + (p – q )c = 0
27
Oct
15. The p^th , q^th and r^th terms of an A.P. are a, b, c, respectively. Show that (q – r )a + (r – p )b + (p – q )c = 0 15. The p^th B C q^th and r^th terms of an A.P. are a respectively. Show that (q – r )a [...]
9. The first term of a G.P. is 1. The sum of the third term and fifth term is 90. Find the common ratio of G.P.
27
Oct
9. The first term of a G.P. is 1. The sum of the third term and fifth term is 90. Find the common ratio of G.P. 9. The first term of a G.P. is 1. The sum of the third term and fifth term is 90. Find the common ratio of G.P. October 27, 2021 [...]
11. Evaluate 11 ∑ k=1 (2 + 3^k )
27
Oct
11. Evaluate 11 ∑ k=1 (2 + 3^k ) 11. Evaluate 11 ∑ k=1 (2 + 3^k ) October 27, 2021 Category: Chapter 9 - Sequences and Series , Maths , NCERT Exemplar Class 11 ,
Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 to 10: 10. x^3 , x^5 , x^7 , … n terms (if x ≠ ± 1).
27
Oct
Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 to 10: 10. x^3 , x^5 , x^7 , … n terms (if x ≠ ± 1). ... n terms (if x ≠ ± 1). Find the sum to indicated number of terms in each of the geometric [...]
Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 to 10: 9. 1, – a, a^2 , – a^3 , … n terms (if a ≠ – 1).
27
Oct
Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 to 10: 9. 1, – a, a^2 , – a^3 , … n terms (if a ≠ – 1). ... n terms (if a ≠ – 1). a^3 A) a2 Find the sum to indicated number of terms [...]
Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 to 10: 8. sqrt 7, sqrt 21 , 3 sqrt 7 , … n terms.
27
Oct
Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 to 10: 8. sqrt 7, sqrt 21 , 3 sqrt 7 , … n terms. ... n terms. 3 sqrt 7 Find the sum to indicated number of terms in each of the geometric progressions in Exercises 7 [...]