The Bombay Stock Exchange Sensitive Index or Sensex is
1
a simple average of the stock prices of the top 500 companies by market capitalisation.
2
a weighted average of the stock prices of the 500 most actively traded shares.
3
a weighted average of the stock prices of the 50 most actively traded shares.
4
a weighted average of the stock prices of a changing set of 30 actively traded stocks.
5
None of the above