Given that 1+2+3+4+….+10=55, then the sum 6+12+18+24+….+60 is equal to · ABC26GN0223

Subject: General Aptitude · Chapter: Number System

Given that $1+2+3+4+\ldots .+10=55$, then the sum $6+12+18+24+\ldots .+60$ is equal to

(a)300

(b)330

(c)455

(d)655

Answer

Answer (as printed): B

Explanation

$$\begin{aligned} & (6+12+18+24+\ldots . .+60)=6 \times(1+2+3+4+\ldots \ldots \ldots+ \\ & 10)=6 \times 55=330 . \end{aligned}$$

Explanation as extracted from the printed page; notation may be imperfect.

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