3 Ex 1 write each expression in expanded form and then find the sum.
4 Ex 2 express the series using sigma notation …+ 61…+ 143
5 Not all sequences are arithmetic or geometric Not all sequences are arithmetic or geometric. Some sequences ar generated by product of consecutive integers. The product n(n – 1)(n – 2)…3 x 2 x 1is called n factorial and symbolized n!.n! = n(n – 1)(n – 2)…1By definition 0! = 1.
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