Consider an A.P. `a_1, a_2, a_3, ` such that `a_3+a_5+a_8=11a n da_4+a_2+=-2,` then the value of `a_1+a+6+a+7` is -8`` b. 5`` c. 7`` d. 9

The average of a_1, a_2, a_3, a_4 is 16. Half of the sum of a_2, a_3, a_4 is 23. What is the value of a_1

Three distinct numbers a_1 , a_2, a_3 are in increasing G.P. a_1^2 + a_2^2 + a_3^2 = 364 and a_1 + a_2 + a_3 = 26 then the value of a_10 if a_n is the n^(th) term of the given G.P. is:

Let a_1,a_2,a_3…… ,a_n be in G.P such that 3a_1+7a_2 +3a_3-4a_5=0 Then common ratio of G.P can be

Let a_1,a_2,a_3 ......, a_n are in A.P. such that a_n = 100 , a_40-a_39=3/5 then 15^(th) term of A.P. from end is

If a_1, a_2, a_3 ,........ are in A.P. such that a_1 + a_5 + a_10 + a_15 + a_20 + a_24 = 225 , then a_1 + a_2+ a_3 + ......+ a_23 +a_24 is equal to

Let S_n denote the sum of the first n terms of an A.P. , a_1,a_2,a_3 ,…, a_n . If a_5+a_9=1 and S_9=6 , then which one of the following is not true ?

For an increasing A.P. a_1, a_2, a_n ifa_1=a_2+a_3+a_5=-12 and a_1a_3a_5=80 , then which of the following is/are true? a.a_1=-10 b. a_2=-1 c. a_3=-4 d. a_5=+2