1.

Findthe31sttermofanAP whose 11th term is 38 and the 16th terrn is

Answer»

11th term=a+10d=3816th term=a+15d=73so 31st tem=a+30d=?a+15d-a-10d=73-385d=35so d=7so a+70=38so a=-32so a+30d=-32+30(7)=-32+210=178so 31st term is 178



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