If S n denotes the sum of the first r terms of an A.P. Then, S 3n : (S 2n – S
If S n denotes the sum of the first r terms of an A.P. Then, S 3n : (S 2n – S n )…
The common difference of an A.P., the sum of whose n terms is S n , is
The common difference of an A.P., the sum of whose n terms is S n , is
If $$frac{1}{{x + 2}},$$ $$frac{1}{{x + 3}},$$ $$frac{1}{{x + 5}}$$ are in A.
If $$frac{1}{{x + 2}},$$ $$frac{1}{{x + 3}},$$ $$frac{1}{{x + 5}}$$ are in A.P. then x = ?
Two A.P.’s have the same common difference. The first term of one of these is
Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The…
If the first term of an A.P. is a and nth term is b, then its common difference
If the first term of an A.P. is a and nth term is b, then its common difference is
If the n th term of an A.P. is 2n + 1, then the sum of first n terms of the A.P.
If the n th term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
If $$frac{{5 + 9 + 13 + …,{text{to}},n,{text{terms}}}}{{7 + 9 + 11 + …
If $$frac{{5 + 9 + 13 + …,{text{to}},n,{text{terms}}}}{{7 + 9 + 11 + …,{text{to}},left( {n + 1} right),{text{terms}}}}$$ $$ = frac{{17}}{{16}},$$ then n =…
The common difference of the A.P. $$frac{1}{{2b}},$$ $$frac{{1 – 6b}}{{2b}},$$
The common difference of the A.P. $$frac{1}{{2b}},$$ $$frac{{1 – 6b}}{{2b}},$$ $$frac{{1 – 12b}}{{2b}},$$ . . . . . is
The common difference of the A.P. is $$frac{1}{{2q}},$$ $$frac{{1 – 2q}}{{2q}}
The common difference of the A.P. is $$frac{1}{{2q}},$$ $$frac{{1 – 2q}}{{2q}},$$ $$frac{{1 – 4q}}{{2q}},$$ . . . . is
If the sum of n terms of an A.P. be 3n 2 + n and its common difference is 6, the
If the sum of n terms of an A.P. be 3n 2 + n and its common difference is 6, then its first term…
The first three terms of an A.P. respectively are 3y – 1, 3y + 5 and 5y + 1. T
The first three terms of an A.P. respectively are 3y – 1, 3y + 5 and 5y + 1. Then, y equals
If four numbers in A.P. are such that their sum is 50 and the greatest number is
If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers…