Experiment

Q.

What is mean by trial and error method

Q.

A bag contains $30$ balls numbered from $1$to $30$, one ball is drawn randomly. The probability that the number on the ball is multiple of $5$ or $7$ is

1. $\frac{1}{2}$

2. $\frac{1}{3}$

3. $\frac{2}{3}$

4. $\frac{1}{4}$

Q. What is scenario

Q.

An activity which gives a result is called an __________.

1. Event
2. Probability
3. Experiment
4. None of the above

Q.

An experiment which can be repeated a number of times under the same set of conditions, and the outcomes are not predictable is called a _______________.

1. Random Experiment
2. Chance
3. Trial
4. Event

Q.

The set of all possible outcomes associated with an experiment is called as________.

1. outcomes
2. trials
3. sample space
4. None of the above

Q.

If E1, E2, E3, ....., En are n elemantary events associated to a random experiment, then P(E1) + P(E2) + P(E3) + ........... + P(En) = ___

1. 0
2. 1
3. Depends on situation
4. 2

Q.

Which of the following is the sample space when one coin is tossed twice?

1. {H, T, H, T}

2. {H, T}

3. {HH, HT, TH, TT}

4. {HH, TT}

Q.

simplyfy -11/3 + 7/18 + 7/(-9)+(-2 1/8) ?

Q.

For an accurate prediction of events and presenting statistics, select the most important information required and the most suitable option.

1. Event description

2. Previously collected data

3. Previously collected data relevant to the event

4. Prediction based on astrology

Q.

The event of toss of a coin landing in head is _______ event.

1. Uncertain

2. Certain

3. Impossible

4. None of the above

Q.

Write in descending order

1/5 , 3/7, 7/10

Q. What is the probability that the sum of two rolled dice is 13?

1. $1$
2. $0$
3. $\frac{1}{3}$
4. $\frac{1}{13}$

Q. is a set of all outcomes associated with a random experiment.

1. Sample space
2. favourable event
3. Impossible event

Q.

In a crash test, 11 cars were tested to determine what impact speed was required to obtain minimal bumper damage. Find the mode of the speeds given in miles per hour below.

24, 15, 18, 20, 18, 22, 24, 26, 18, 26, 24

1. 15 -20

2. 10-15

3. 0-5

4. 5-10

Q.

$\begin{array}{cccccccccccccccc}\text{Bus}& 1& 2& 3& 4& 5& 6& 7& 8& 9& 10& 11& 12& 13& 14& 15\\ \text{Time(hr:min)}& 8:15& 8:18& 8:23& 8:29& 8:32& 8:40& 8:45& 8:52& 8:54& 9:00& 9:07& 9:13& 9:20& 9:25& 9:32\end{array}$

In the above observation, how many buses have reached within 5 minutes?

1. 8

2. 5

3. 7

4. 4

Q. An experiment which can be repeated a number of times under the same set of conditions, and the outcomes are not predictable is called a _______________.

1. Event
2. Trial
3. Random Experiment
4. Chance

Q.

$$\begin{array}{cccccccccccccccc}Bus& 1& 2& 3& 4& 5& 6& 7& 8& 9& 10& 11& 12& 13& 14& 15\\ Time(hr:min)& 8:15& 8:18& 8:23& 8:29& 8:32& 8:40& 8:45& 8:52& 8:54& 9:00& 9:07& 9:13& 9:20& 9:25& 9:32\end{array}$$

In the above observation, how many buses have reached within 5 minutes?

1. 4

2. 7

3. 5

4. 8

Q.
According to the given schedule, when is the dentist appointment?

1. Tuesday 9:00 A.M.
2. Wednesday 9:00 A.M.
3. Thursday 9:00 A.M.
4. Monday 9:00 A.M.

Q. Mark (✓) against the correct answer
Which one is greater out of (2 : 3) and (4 : 7)?

(a) 2 : 3
(b) 4 : 7
(c) both are equal

Q.

If A = {1, 2, 3, 4}

B = {3, 4, 5, 6, 7}

C = {6, 7, 8, 9}

D = {7, 8, 9, 10}

$\begin{array}{cc}ColumnA& ColumnB\\ 1.A\cup B& A.\{3,4,6,7\}\\ 2.A\cap B& B.\varnothing \\ 3.(B\cap C)\cup D& C.\{3,4\}\\ 4.B\cup C\cup D& D.\{3,4,5,6,7,8,9,10\}\\ 5.(A\cap B)\cap (B\cup C)& E.\{1,2,3,4,5,6,7\}\\ & F.\{6,7,8,9,10\}\\ & G.\{7\}\end{array}$

1. 1 - e, 2 - c, 3 - f, 4 -d, 5-c

2. 1 - e, 2 - c, 3 - f, 4 -d, 5-a​

3. 1 - b, 2 - a, 3 - c, 4 -e, 5-f​

4. 1 - b, 2 - a, 3 - c, 4 -e, 5-c

Q.

The value of following expression when $x=-3$,

$x^2$ − 5x + 4 gives $(-3{)}^2$ − 5 (−3) + 4 = 9 + 15 + 4 = 28

1. False

2. True

Q.

The event of increase in age with time is a _______ event.

1. Impossible

2. Certain

3. Uncertain

4. None of the above

Q.

What is the probability that a card drawn from a pack of 52 cards is black?

1. 3/13

2. 1/2

3. 1/3

4. 1/4

Q.

We have cards numbered 1 to 52. What is the probability that a card drawn at random has a perfect square?

1. 7/52

2. 1/13

3. 5/13

4. 3/13

Q. Probability of getting all head when three coins are rolled together is

Q.

A bag contains 40 balls coloured as red, blue and black. If P(red) = 11/20 and P(blue) = 1/5, P(black)=?

1. 1/4

2. 2/3

3. 4/5

4. 13/20

Q.

In an event there are two possible outcomes, the probability of occurrence of one outcome is 1. The probability of occurrence of the other outcome is ____.

1. 1

2. $\frac{1}{2}$

3. $\frac{1}{4}$

4. 0

Q. Ratio of $60$ hrs to $600$ min is:

1. $\frac{3600}{600}$
2. $\frac{1}{6}$
3. $\frac{6}{1}$
4. $\frac{5}{1}$

Q.

Which of the following is not a possible value in probability for the occurrence of an event?

1. 1

2. 0

3. 2/3

4. 3/2