What does the abbreviation 'SEBI' stand for?

What does the abbreviation ‘SEBI’ stand for? Explain the term SENSEX. How many shares are included in the SENSEX?

SEBI stands for Securities and Exchange Board of India. SENSEX is the benchmark index of BSE. Since, the BSE has been the leading exchange of Indian securities market, the SENSEX has been an important indicator of Indian Stock Market. Stocks of thirty companies actively traded in the market constitute the SENSEX in Bombay Stock Exchange.