defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Sequences and Series Arithmetic Progressions
Suppose that the number of terms in an A.P. is 2k, k∈N. If the sum of all odd terms of the A.P. is 40, the sum of all even terms is 55 and the last term of the A.P. exceeds the first term by 27, then k is equal to
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