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Given: Five consecutive even number sum= 2720 The sum of an even number let the five number be x-4, x-2, x, x+2, x+4. Now, x-4+ x-2+ x+ x+2+ x+4= 2720 5x = 2720 x = 544 then, sum of third and fifth number, x + x+4 = 544+548 = 1092 Alternate Method: As per the question. Sum of five consecutive even number is 2720. So, the average is 2720/5=544 the middle number of the five consecutive even number which is third even number, so fifth even number is 544+4 = 548 Sum of 544+548 = 1092
5, 5, 15, 75, ?, 4725
8, 24, 48, 80, ?, 168
8 13 36 123 ? 2585
250, 279, 311, 349, 396, ?
840, 2520, 630, 3150, ?, 3675
12, 24, 46, 78, 120, ?
81, 41, 42, 64.5, ?, 330
8, 58, 75, 94, 115, ?
200 ? 96 38.4 7.68 0