How many terms of the arithmetic sequence 5,7,9...are to be added to get 896
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a=5
d=2
Tn=896
Tn = a+(n-1)d
896 = 5 + (n-1) 2
896 = 5 + 2n + 2
896 = 7 + 2n
896 - 7 = 2n
889 = 2n
n = 444.5
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