C= \(\frac{2 . 4}{3²}\) \(\frac{3.5}{4²}\) \(\frac{4.6}{5²}\) \(\frac{5.7}{6²}\) ......\(\frac{49.51}{50²}\)
C= \(\frac{2 . \not{4}}{3.\not{3}}\) \(\frac{\not{3}.\not{5}}{\not{4}\not{4}}\) \(\frac{\not{4}\not{6}}{\not{5}\not{5}}\) \(\frac{\not{5}.7}{\not{6}}\) ......\(\frac{\not{49}.51}{50.\not{50}}\)
C= \(\frac{2}{3}\). \(\frac{51}{50}\)
C= \(\frac{17}{25}\)