Progression (Sequence and Series)Hard

Question

If a1, a2, a3, ......, a24 are in A.P. and a1 + a5 + a10 + a15 + a20 + a24 = 225, then a1 + a2 + a3 + ...... + a23 + a24 is equal to-

Options

A.909
B.75
C.750
D.900

Solution

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