RRB NTPC · प्रश्न 51

सोडवा: \(\frac{1}{2} \times \frac{2}{3} - \frac{3}{4} \left( \frac{1}{2} \times \frac{1}{3} + \frac{5}{6} \right) \times \frac{4}{21}= ?\)

1. A

   \(\frac{4}{21}\)

2. B

   \(\frac{1}{3}\)

3. C

   2

4. D

   \(\frac{1}{2}\)