Number and Algebra
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Calculus
The sequences an=2+3(n−1)a_n = 2 + 3(n-1)an=2+3(n−1) and bn=k+5(n−1)b_n = k + 5(n-1)bn=k+5(n−1) have the same 11th term, and this term equals 323232. Find kkk.
Consider the arithmetic sequences un=12+4(n−1)u_n = 12 + 4(n - 1)un=12+4(n−1) and vm=20+2(m−1)v_m = 20 + 2(m - 1)vm=20+2(m−1). List all terms common to both sequences that are less than 100100100.
In an arithmetic sequence, the 7th term is 252525 and the 15th term is 494949. Find the first term and the common difference.
Find the first term and the common difference.
For the arithmetic progression defined by u1=3u_1=3u1=3 and u6=43u_6=43u6=43, find the smallest integer nnn such that un>100u_n>100un>100.
In an arithmetic sequence, the 8th term is twice the 3rd term. Express the common difference ddd in terms of the first term aaa.
Three consecutive terms of an arithmetic sequence are aaa, ababab, and a+ba+ba+b. Express bbb in terms of aaa.
For the arithmetic sequence defined by un=4n−1u_n=4n-1un=4n−1, determine its first term and common difference.
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Question Type 2: Finding common difference given two terms
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Question Type 4: Finding sum of first n terms given first term and common difference