Question

1/1×3+1/3×5+1/7×9+1/49×51​

Answer 1

$\frac{1}{1} \times 3 + \frac{1}{3} \times 5 + \frac{1}{7} \times 9 + \frac{1}{49} \times 51$

$\frac{3}{1} + \frac{5}{3} + \frac{9}{7} + \frac{51}{49}$

$3 + \frac{5}{3} + \frac{9}{7} + \frac{51}{49}$

$\frac{1028}{147}$