find the algebraic expression to compute the third number of arithmetic sequence using first and second numbers - Maths - Arithemetic Sequences

Question

find the algebraic expression to compute the third number of
arithmetic sequence using first and second numbers

Gursheen Kaur · Accepted Answer

<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5cf3a19371a89%20png">Let
arithmetic sequence with first and second number be : 3, 6,
now to find third number
Solution =
a = 3, d = common difference = 6-3 = 3
Third number = a+2d=3+2(3)=3+6=9
Similarly, a+3d = fourth term
Hope it helps you
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