find the 31 trans of an ap whose 11th term is 38 and the 16 term is 73
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Step-by-step explanation:
a11=38
a+10d=38---------(1)
a16=73
a+15d=73-------(2)
subtracting 1 from 2 ,we get
d=7 and a=-32
hence
a31=a+30d
=-32+30(7)
=-32+210
= 178 answer
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