What event caused a significant surge in the PSU Bank index on October 25, 2017?

A merger announcement between two major PSU banks The release of positive quarterly earnings reports by PSU banks The government's decision to infuse Rs. 210,000 Crore into the PSU banking system A sudden increase in demand for loans from PSU banks

What is the primary focus of the trading module discussed in the text?

Predicting market trends based on gut feelings Following recommendations from financial advisors Developing and understanding trading systems Investing based on news headlines and market sentiment

Which of the following is NOT considered a valid trading system approach according to the text?

Systematic deduction Trading based on personal intuition Following a friend's trading advice Mimicking trades seen on television

What is the key element that distinguishes a trading system from other trading approaches?

The ability to guarantee profits The use of complex mathematical formulas The reliance on expert opinions and predictions The presence of a quantifiable and definable process

What is the author's perspective on the effectiveness of trading systems?

Trading systems are foolproof methods for generating consistent profits The success of a trading system depends heavily on the user's input and interpretation Trading systems are only suitable for experienced traders with advanced programming skills All trading systems are equally effective, regardless of market conditions