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Evaluate \(\frac{1}{3} \div [\frac{5}{7}(\frac{9}{10} -1 + \...

Evaluate 13÷[57(9101+34)]

A.

2839

B.

1339

C.

3928

D.

8413

Correct answer is A

13÷[57(9101+34)]

13÷[57(9101010+34)]

= 13÷[57(110+34)]

= 13÷[57(2+1520)]

= 13÷[57×1320]

13+[1328] = 13×2813

= 2839