# Class 10 Maths Mcqs

Q:

What is the probability of selecting 8 blue balls from 10 green balls?

 A) 1 B) 0 C) 0.23 D) 0.5

Explanation: Selecting 8 blue balls from 10 green balls is an impossible event. An event that doesn’t occur in any possible scenario is called an impossible event. The probability of an impossible event is always zero.

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

88
Q:

The probability of occurring an event is 0.45. Find the probability of not occurring the event.

 A) 0.5 B) 0.45 C) 0.55 D) 0.1

Explanation: The probability of occurring an event be P(E) = 0.45
The probability of not occurring the event = P(E)
P(E) + P(E) = 1
0.45 + P(E) = 1
P(E) = 0.55

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

72
Q:

What kind of an event is getting a head or a tail when a coin is tossed?

 A) Impossible event B) Equal event C) Exhaustive event D) Equally likely

Explanation: If two or more events have an equal chance of occurrence then that kind of an event is called an equally likely event. Here, The chance of getting a head or a tail is equal so, it is an equally likely event.

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

57
Q:

What is the probability of a sure event?

 A) 0 B) 1 C) 2 D) 3

Explanation: An even that is certain to occur is called a sure event or a certain event. The probability of a sure event or a certain event is always one and it will never exceed over one.

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

61
Q:

What is the name of the event for which the probability is zero?

 A) Impossible event B) Random event C) Exhaustive events D) Mutual events

Explanation: An event that doesn’t occur in any possible scenario is called an impossible event. The probability of an impossible event is always zero.

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

55
Q:

What is the sum of the probability of occurring an event E and the probability of not occurring the event E?

 A) 0 B) -1 C) 1 D) ∞

Explanation: Probability of occurring an event E = P(E)
Probability of not occurring the event E = P(E)
P(E) + P(E) = 1

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

80
Q:

Who gave the definition of probability?

 A) Euclid B) Simon Laplace C) Archimedes D) Einstein

Explanation: The definition of probability was given by Pierre Simon Laplace in the year 1795. Probability can be defined as the ratio of the number of favorable outcomes to the total number of possible outcomes.

Category: School MCQs
Sub Category: Class 10 Maths Mcqs

61
Q:

What is the formula for the median of Grouped data?

 A) Median = L + [(n / 2 – cf) / f] * h B) Median = L + [(n / 2 + cf) / f] * h C) Median = L + [(n / 2 – cf) / f] + h D) Median = L * [(n / 2 – cf) / f] * h

Answer & Explanation Answer: A) Median = L + [(n / 2 – cf) / f] * h

Explanation: Formula for the Median of Grouped Data
Median = L + [(n / 2 – c.f) / f] * h
L = Lower limit of Median Class
cf = Cumulative frequency of the class prior to median class
f = Frequency of Median Class
h = Class size
n = Total frequency