Subject
Quantitative Aptitude
Topic
Average
If a, b, c, d, e are five alternate odd numbers, their average is:
If a, b, c, d, e are five alternate odd numbers, their average is:
ক)
5 (a + 4)খ)
abcde/5গ)
5 (a + b + c + d + e)ঘ)
(a + 8)ঙ)
None of theseExplanation
∵ a, b, c, d and e are alternate odd numbers, assuming a to be the least one of them, b = a + 2 + 2 = a + 4, c = a + 8, d = a + 12, e = a + 16 We know that, average = Sum of all quantities/Number of quantities ∴ Average = (a + a + 4 + a + 8 + a + 12 + a + 16) = 5a + 40 ⇒ Average = (5a + 40)/5 = a + 8Related questions
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