Q. 18 C5.0( 1 Vote )

In the following A.P., find the missing terms:

– 4, ,,,, 6

Answer :

Here, a = –4, n = 6 and l = 6


We have,


l = a + (n – 1)d


6 = –4 + (6 – 1)d


6 = –4 + 5d


10 = 5d



So, the missing terms are –


a2 = a + d = –4 + 2 = –2


a3 = a + 2d = –4 + 2(2) = –4 + 4 = 0


a4 = a + 3d = –4 + 3(2) = –4 + 6 = 2


a5 = a + 4d = –4 + 4(2) = –4 + 8 = 4


Hence, the missing terms are –2, 0, 2 and 4


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