Write first four terms the A .P. when the first term ‘a’ and the common difference ‘d’ are given as follows :
a = –2, d = 0
a = –2, d = 0
First term = a = – 2
Second term = –2 + d = –2 + 0 = –2
Third term = –2 + d = –2 + 0 = –2
Fourth term = –2 + d = –2 + 0 = –2
Hence first, first four terms of the given A .P. are -2, -3, -2 -2.