1. Verify A ∪ B = B ∪ A for A = { 1,3,5,7} and B = {a,b,c}.
2. Determine the equation of straight line with slope 1 and having the intercept 5 on the y axis.
3. Determine the amount of the annuity of Rs.2000 per annum for 10 years reckoning compound interest at 10% per annum.
4. Determine the arithmetic mean of 12, 15, 18, 20, 25, 30, 22, 35, 37, 26.
5. In the distribution mean = 65, medium = 70 and coefficient of skewness = -0.6. Determine the coefficient of variation.
6. prepare down any three components of time series.
7. prepare down the formula for finding the weighted aggregate index.
8. Prove Distributive law using Venn diagram.