Q.7 Investigate and write any 3 of the following:
(i) History of Pie
(ii) History of zero
(iii) Contribution of Euclid in the Mathematics
(iv) Contribution of Maths in science
(v) From your point of view the greatest invention in Maths.
(vi) Write any two methods used in vedic Mathematics for Multiplication, Division, Squaring, cubing, square root and cube root.
