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21. Which term of the A.P.4,9, 14, 19,...... is 10921.1462. 18th.22004. 160

Answer»

Given:a=4d=9-4=5

an=109Formula an=a+(n-1)d

109=4+(n-1)5105=5n-5110=5nn=110/5n=22Therefore the 22nd term is 109



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