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What is the mean of four consecutive even integers \(a\) , \(b\) , \(c\) , \(d\) ?
1. \(a + d = b + c\) 2. \(b + c = d - a\)
Intresting question. B as OA is correct.
The mean of 4 consecutive even integers can never be even. In fact it is always an odd integer. Using st. 2, if \(b + c = d - a\), the only possible values for a, b, c, and d are 0, 2, 4, and 6 respectively. So mean is 3. _________________