1.

What is the average of first 15 multiples of 12?1). 962). 663). 14404). None of these

Answer»

FIRST 15 multiples of 12 are 12, 24, 36… 180

SUM of all multiples = 12 + 24 + 36 + ... + 180 = 12(1 + 2 + 3 + … + 15) = 12 × 120 = 1440

∴ Average = 1440/15 = 96


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