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If the tangent to the curve at any point on it cuts the axes OX and OY at P and Q respectively, then OP + OQ is
If A and B are two given sets, then A ∩ (A∩B)c is equal to
The coefficient of x in the equation x2 + px + q = 0 was taken as 17 in place of 13, its roots were found to be -2 and -15, the roots of the original equation are
If the sets A and B are defined as
A = {(x, y) : y = 1/x, 0 ≠ x ∈ R}
B = {(x, y) : y = -x, x ∈ R}, then
In a town of 10,000 families it was found that 40% family buy newspaper A, 20% buy newspaper B and 10% families buy newspaper C, 5% families buy A and B, 3% buy B and C and 4% buy A and C. If 2% families buy all the three newspapers, then number of families which buy A only is
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