Find the 31st term of an AP whose 11th term is 38 and the 16th term is 73.
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How many three-digit numbers are divisible by 7
Find n if the given value of x is the nth term of the AP: 521,11,1621,22,... ; x=550.
Which term of the AP 121,117,113,.... is its first negative term?
Which of the following are AP's? If they form an AP, find the common difference d and the first 3 terms.3,3+2, 3+ 22, 3+32,...
What is the sum of the first nineteenth terms of the arithmetic sequence 2, 6, 10, 14.....?
In an AP:(i) Given a=5,d=3, an=50, find n and Sn.(ii) Given a=7, a13=35, find d and S13.(iii) Given a12=37, d=3, find a and S12.(iv) Given a3=15, S10=125, find d and a10.(v) Given d=5, S9=75, find a and a9.(vi) Given a=2,d=8, Sn=90, find n and an.(vii) Given a=8, an=62, Sn=210, find n and d.(viii) Given an=4, d=2, Sn=−14, find n and a.(ix) Given a=3,n=8,S=192, find d.(x) Given l=28,S=144, and there are total 9 terms. Find a.
Show that the progression given below in an AP. Find the first term, common difference and next term.20,45,80,125,......
In an Arithmetic sequence, Sn represents the sum to n terms, what is Sn−Sn−1?