Q10 of 28 Page 9

Insert 4 A.M.s between 4 and 19.

Let A1, A2, A3, A4 be the 4 AM Between 4 And 19


Then, 4, A1, A2, A3, A4, 19 are in AP.


We know,





d = 3


Hence,


A1 = a + d = 4 + 3 = 7


A2 = A1 + d = 7 + 3 = 10


A3 = A2 + d = 10 + 3 = 13


A4 = A3 + d = 13 + 3 = 16

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