Insert four arithmetic means between 4 and 29.

To find: Four arithmetic means between 4 and 29


Formula used: (i) , where, d is the common difference


n is the number of arithmetic means


(ii) An = a + nd


We have 4 and 29


Using Formula,





Using Formula, An = a + nd


First arithmetic mean, A1 = a + d


= 4 + 5


= 9


Second arithmetic mean, A2 = a + 2d


= 4 + 2(5)


= 4 + 10


= 14


Third arithmetic mean, A3 = a + 3d


= 4 + 3(5)


= 4 + 15


= 19


Fourth arithmetic mean, A4 = a + 4d


= 4 + 4(5)


= 4 + 20


= 24


Ans) The four arithmetic means between 4 and 29 are 9, 14, 19 and 24


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