Question

Consider the series 57 + 59 + 61 + 63 + 65 + 67 + 69 + 71. The sum of this series is equal to _____?

OPTIONS:
6³
8³
4³
7³

PLS AMSWER IT DONT SPAM IT
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Answer 1

Answer:

step by step explanation:

$\Large{\mathsf{ S_n \Rightarrow \frac{n}{2} ( T_1 + T_2)}}$

$\Large{\mathsf{ S_8 \Rightarrow \frac{8}{2} ( 57 + 71)}}$

$\Large{\mathsf{ S_8 \Rightarrow 4( 128)}}$

$\Large{\mathsf{ S_8 \Rightarrow 512}}$

$\Large{\mathsf{ S_8 \Rightarrow 8^3}}$

$\Large{\mathsf{ \Rightarrow 8^3}}$

Answer 2

question

Consider the series 57 + 59 + 61 + 63 + 65 + 67 + 69 + 71. The sum of this series is equal to _____?

answer

7³