1.

Find the 31st term of an AP whose 11th term is 38 and 16th term is 73.

Answer» a+10d=38 : 1 , a+15d=73 :22-1=a+15d-a-10d=73-38=5d=35d=7a=38-10d=- 3231st term=a+30d=-32+210=178
A+10d=38A+15d=73 -5d=-53d d=53/5


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