Q.1
The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
Q.2
The common difference of the A.P. $$\frac{1}{3},$$ $$\frac{{1 - 3b}}{3},$$  $$\frac{{1 - 6b}}{3},$$   . . . . . . is
Q.3
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 are
Q.4
If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then $$\frac{{{S_1}}}{{{S_2}}}$$
Q.5
If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be
Q.6
If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
Q.7
The sum of first five multiples of 3 is:
Q.8
(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......
Q.9
If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
Q.10
The nth term of an A.P., the sum of whose n terms is Sn, is
Q.11
For an A.P. if a25 - a20 = 45, then d equals to:
Q.12
If the first, second and last term of an A.P. are a, b and 2a respectively, its sum is
Q.13
In an A.P., if d = -4, n = 7, an = 4, then a is
Q.14
Which term of the A.P. 92, 88, 84, 80, ...... is 0?
Q.15
If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
Q.16
The sum of first n odd natural numbers in
Q.17
For A.P. T18 - T8 = ........ ?
Q.18
Which term of the A.P. 24, 21, 18, ............ is the first negative term?
Q.19
15th term of A.P., x - 7, x - 2, x + 3, ........ is
Q.20
If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
0 h : 0 m : 1 s