Question

1/(2²-1)+1/(4²-1)+1/(6²-1)........1/(20²-1)​

Answer 1

Answer:

0.0302469

Step-by-step explanation:

two square 4-1=3 like that each equ is solve then ans is 0.0302469

Answer 2

$\huge\bold\red{ANSWER}$

=>$\frac{1}{3}$+$\frac{1}{15}$+$\frac{1}{35}$............$\frac{1}{399}$

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