Write any three uses of index number especially in Economics.

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1. In Measuring Changes in the Value of Money 2. In Cost of Living 3. In Analysing Markets for Goods and Services
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Teacher with 15 years + experience

Speed up SELECT query Helps to make a row unique or without duplicates(primary,unique) If index is set to fill-text index, then we can search against large string values. for example to find a word from a sentence etc.
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