9 cbse

Which of the following is an irrational number?

• Sq. root (16)

• sq.root (12/3)

• sq.root (12)

• sq.root (100)

Every rational number is

• Whole number

• Natural number

• Integer

• Real number

The value of f(x)=5x-4x^2+3 when x=-1 is

• 3

• -12

• -6

• 6

If a/b + b/a= -1 (a,b is not equal to zero), the value of a^3 - b^3 is

• 1

• -1

• 0

• 1/2

The solution of equation x-2y=4 is

• (0,2)

• (2,0)

• (4,0)

• (1,1)

The graph of linear equation x+2y=2 cuts y axis at

• (2,0)

• (0,2)

• (0,1)

• (1,1)

The angle of a triangle are in the ratio 5:3:7 the triangle is_____angled triangle

• Acute

• Obtuse

• Right

• Isosceles

One of the angles of a triangle is 75°. If the difference of other two is 35° then the largest angke of other twi angles has a measure

• 80°

• 75°

• 70°

• 135°

An exterior angle of a triangle is 80° and thr interior opposite angles are in the ratio 1:3 , measure of interior opposite angles are

• 30°, 90°

• 40°, 120°

• 20°, 60°

• 30°, 60°

If P(E)= 0.38 then prpbability of event E not occuring is

• 0.62

• 0.38

• 0.48

• 1