Q. 10. What measure of central tendency is obtained graphically as the x-coordinate of the point of intersection of the two ogives for grouped data?
Ans. Median
SECTION B
Questions number 11 to 15 carry 2 marks each.
Q.11. Find a quadratic polynomial whose zeroes are 1 and – 3. Verify the relation between the coefficients and zeroes of the polynomial.
Sol. Sum of zeroes = 1 + (– 3) = – 2
Product of zeroes = 1 (– 3) = – 3
Quadratic polynomial is
Q. 11. Obtain all other zeroes of the polynomial 
if two of its zeroes 
Sol.
Q. 12. 
Sol.
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