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(1) The first term of an A.P is 6 and the common difference is 5. Find the A.P and its general term

Solution :
First term = 6
Common difference = 5
a  = 6
d  = 5
General form of A.P is a , a + d , a + 2 d , …………….
 6 , (6 + 5) , (6 + 2(5)) , …………..
 6 , 11 , (6 + 10) ,……………….       
Hence the required arithmetic progression is  6, 11, 16 , …………..