Given expression

= \( \Large \left(1+\frac{1}{2}\right) \left(1+\frac{1}{3}\right) \left(1+\frac{1}{4}\right).... \left(1+\frac{1}{150}\right) \)

= \( \Large \frac{3}{2} \times \frac{4}{3} \times \frac{5}{4} \times .... \times \frac{151}{150}

= \frac{151}{2} = 75.5 \)