17. Euclid was

[amp_mcq option1=”Greek mathematician” option2=”Propounded the geometrical theorems” option3=”Contributor to the use of deductive principles of logic as the basis of geometry” option4=”All of the above” correct=”option4″]

Detailed SolutionEuclid was

19. Recession is

[amp_mcq option1=”slowing down of economic activity over a limited period” option2=”period that results from accumulation of unsold goods, owing to fall in demand” option3=”period during which unemployment may rise and demand and output may fall, leading to slump in trade” option4=”All of the above” correct=”option4″]

Detailed SolutionRecession is