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Q:- The pair of linear equations 2x + 3y = 5 , 4x + ky = 10 have infinite number off solutions if ----
a)K=0
b)k=1
c)k=3
d)k=6
Q:- If the roots of the equation ax^2 + bx + c = 0
a) b/2a
b)-b/2a
c)b^2/4a
d) -b^2/4a
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