Mathematics Quiz

Which one is a monoid?

• (N, +)

• (N, ×)

• (E, ×)

• None of these

If m, n are roots of equation 2x^2 + 5x + 6 = 0, then value of 2mn is;

• 13

• -13

• 36

• 14

The value of Σk from 1 to 98 is;

• ω

• 2ω

• 1-

• 0

lim (x^2 - 2)/(x^2 - 3) as x approaches infinity?

• 3/2

• 1

• 3/4

• ∞

The maximum value of y = 2 - 2x^2 is;

• 0

• 1

• -1

• 2

The line y = mx + 1 is tangent to parabola y = x^2 if;

• m = 2

• m = 1/2

• m = 1/4

• m = -1/3

If u = 6i + 9j + 4k and v = 8i - 4j + 6k then u.v = ?

• 8

• 6

• 10

• 4

The sum of 3 A.Ms between 5 and 11 is;

• 24

• 12

• 34

• 25

Number of real roots of 2x^2 + 4x + 6 = 0 are;

• 2

• 1

• 0

• 3

If the vertices of a triangle are A(0,0), B(4,3) and C(3,0) then centroid is;

• (0,0)

• (3.5,2.5)

• (1.5,3.5)

• (2.33,1)