Question

175. Given that 1 + 2 + 3 + 4 + ... + 10 = 55, then the
sum 6 + 12 + 18 + 24 + ... + 60 is equal to
(a) 300
(b) 330
(c) 455
(d) 655​

Answer 1

330

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Answer 2

Answer:

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