The probability of event equal to zero is called;

The probability that cannot exist among the following:

If P(E) = 0.07, then what is the probability of ‘not E’?

A bag has 3 red balls and 5 green balls. If we take a ball from the bag, then what is the probability of getting red balls only?

A bag has 5 white marbles, 8 red marbles and 4 purple marbles. If we take a marble randomly, then what is the probability of not getting purple marble?

A dice is thrown in the air. The probability of getting odd numbers is

If we throw two coins in the air, then the probability of getting both tails will be:

If two dice are thrown in the air, the probability of getting sum as 3 will be

A fish tank has 5 male fish and 8 female fish. The probability of fish taken out is a male fish:

The sum of the probabilities of all the elementary events of an experiment is

 If an event cannot occur, then its probability is

The probability that a non leap year selected at random will contain 53 Sundays is

The probability of getting a bad egg in a lot of 400 is 0.035. The number of bad eggs in the lot is

Two players, Sangeeta and Reshma, play a tennis match. It is known that the probability of Sangeeta winning the match is 0.62. The probability of Reshma winning the match is

(Sin 30°+cos 60°)-(sin 60° + cos 30°) is equal to:

1 – cos²A is equal to:

If cos X = ⅔ then tan X is equal to:

sin 2A = 2 sin A is true when A =

The value of (sin 45° + cos 45°) is

If the length of the shadow of a tree is decreasing then the angle of elevation is

The angle of elevation of the top of a building from a point on the ground, which is 30 m away from the foot of the building, is 30°. The height of the building is

 If a tower 6m high casts a shadow of 2√3 m long on the ground, then the sun’s elevation is:

The angle of elevation of the top of a building 30 m high from the foot of another building in the same plane is 60°, and also the angle of elevation of the top of the second tower from the foot of the first tower is 30°, then the distance between the two buildings is:

From a point on the ground, which is 15 m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 60°. The height of the tower (in m) standing straight is:

The line drawn from the eye of an observer to the point in the object viewed by the observer is said to be

When the shadow of a pole h metres high is √3h metres long, the angle of elevation of the Sun is

A ladder makes an angle of 60° with the ground, when placed along a wall. If the foot of ladder is 8 m away from the wall, the length of ladder is

If the height and length of a shadow of a tower are the same, then the angle of elevation of Sun is

The angle of depression of an object on the ground, from the top of a 25 m high tower is 30°. The distance of the object from the base of tower is

The shadow of a tower standing on level ground is found to be 40 m longer when the Sun’s altitude is 30° than when it was 60°. The height of the tower is 

From a point on a bridge across a river the angle of depression of the banks on opposite sides of the river are 30° and 45° respectively. If the bridge is at the height of 30 m from the banks, the width of the river is

The ratio of the height of a tower and the length of its shadow on the ground is √3 : 1. The angle of elevation of the Sun is

If O(p/3, 4) is the midpoint of the line segment joining the points P(-6, 5) and Q(-2, 3), the  the value of p is:

The point which divides the line segment of points P(-1, 7) and (4, -3) in the ratio of 2:3 is:

The ratio in which the line segment joining the points P(-3, 10) and Q(6, –8) is divided by O(-1, 6) is:

The point which lies on the perpendicular bisector of the line segment joining the points A(–2, –5) and B(2, 5) is

 If sin A + sin²A = 1, then the value of the expression (cos²A + cos⁴A) is

The value of the expression sin⁶θ + cos⁶θ + 3 sin²θ cos²θ is

2 tan 30°/(1 + tan²30°) =

If cos X = a/b, then sin X is equal to:

If sin A = 1/2 , then the value of cot A is

 If r is the radius of the sphere, then the surface area of the sphere is given by;

15 solid spheres are made by melting a solid metallic cone of base diameter 2cm and height 15cm. The radius of each sphere is:

If a cylinder is covered by two hemispheres shaped lid of equal shape, then the total curved surface area of the new object will be

A tank is made of the shape of a cylinder with a hemispherical depression at one end. The height of the cylinder is 1.45 m and radius is 30 cm. The total surface area of the tank is:

A solid cylinder of radius r and height h is placed over another cylinder of same height and radius. The total surface area of the shape so formed is 

Two identical solid hemispheres of equal base radius r cm are stuck together along their bases. The total surface area of the combination is 

The roots of 100x² – 20x + 1 = 0 is:

The sum of two numbers is 27 and product is 182. The numbers are:

If one root of equation 4x²-2x+k-4=0 is reciprocal of the other. The value of k is:

(Sin 30°+cos 60°)-(sin 60° + cos 30°) is equal to: