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1
The mid-point of a class interval is called its __________________.
Class size
Class mark
Upper limit
Lower limit
2
In a football match, Ronaldo makes 4 goals from 10 penalty kicks. The probability of converting a penalty kick into a goal by Ronaldo, is ___________
3
There are 8 toy cars and 5 dolls in a shop. In how many ways the shopkeeper will either sell a toy car or a doll?
13 ways.
7 ways.
20 ways.
91 ways .
4
An unbiased wheel with numbers 1- 9 is rotated. Find probability of getting 5.
5
Tally marks are used to find which of the following?
Frequency
Range
Median
Mode
6
A dice is thrown, what is the probability that the number obtained is a prime number ?
7
The mode of the data : 12, 8, 4, 8, 1, 8, 9, 11, 9, 10, 12, 8 Is ____________.
9
11
8
Which of following statements are true for secondary data
1. Data is not originally collected rather obtained from published or unpublished sources.
2. Secondary data are collected by an individual or an institution for some purpose and are used by someone else in another context.
3. The secondary data should be used with great care.
Only 1 and 2
Only 2 and 3
Only 1 and 3
1, 2 and 3
The arithmetic mean of first ten natural numbers is _______________
5.5
7.5
10
The arithmetic mean of first five natural numbers is _______________
Find the mean of the following distribution.
25
30
20
None of these
12
Find the class mark with maximum frequency by using the given data:
100
90
120
110
13
If P(n , 4) = 20 X P(n , 2) , Find n.
14
If the arithmetic mean of 6, 8, 5, 7, x and 4 is 7, then x is
15
A basket contains 12 oranges, 7 apples, 5 mangoes and 4 bananas. Sukhmeet picks up a fruit without looking at it. What is the number of favourable cases that it is a mango?
16
Out of 15 balls in a box, 5 are white in color, 3 are red in color, 7 are yellow in color Dhron picks up a ball without looking at it. The probability that it is not a red ball is:
5/4
1/5
1/4
4/5
17
Two coins are tossed simultaneously. The probability of getting at the most two heads is _______________
18
There are __________ face cards in the deck of 52 playing cards.
24
19
Two coins are tossed simultaneously. The probability of getting at the most two tails is _______________
What is p(Not E) if p(E)=0.8?
0.8
0
0.2
1.8
21
In a pack of cards numbered from 1 to 100, how many favorable outcomes are there for picking a card containing a number that is divisible by 5 ?
22
23
How many favourable outcomes are there for picking a black marble from a jar containing 12 white, 10 grey and 20 black marbles?
In a bag, there 4 blue balls, 7 red balls, 5 green balls and 8 pink balls. Ram picks up a ball without looking at it. The probability that it is not a green ball is
5/24
19/24
8/24
9/24
The probability of a certain event is _______________.
greater than 1
less than 0
26
A dice is rolled and a card is picked from a well shuffled deck of cards. What is the probability of getting an red king and an even number ?
1/312
1/72
1/26
1/52
27
In a box, there are 5 nestle and 18 dairy milk chocolates. Mohan picks up a chocolate without looking at it.The probability that it is not a dairy Milk Chocolate.
1-(18/23)
1-(5/23)
1+(8/23)
5/18
28
Two coins and a dice are thrown simultaneously. The total outcomes of the experiment. will be
{ HH1 , HH2 , HH3 , HH4 , HH5 , HH6 , HT1 , HT2 , HT3 , HT4 , HT5 , HT6 , HH1 , TH2 , TH3 , TH4 , TH5 , TH6 , TT1 , TT2 , TT3 , TT4 , HT5 , TT6}
{ HH1 , HH2 , HH3 , HH4 , HH5 , HH6 , HT1 , HT2 , HT3 , HT4 , HT5 , HT6 , TH1 , TH2 , TH3 , TH4 , TH5 , TH6 , TT1 , TT2 , TT3 , TT4 , TT5 , TT6}
{ TH1 , HH2 , HH3 , HH4 , HH5 , HH6 , HT1 , HT2 , HT3 , HT4 , HT5 , HT6 , TH1 , TH2 , TH3 , TH4 , TH5 , TH6 , TT1 , TT2 , TT3 , HT4 , TT5 , TT6}
{ HH1 , HH2 , HH3 , HT4 , HH5 , HH6 , HT1 , HT2 , HT3 , HT4 , HT5 , HT6 , TH1 , TH2 , TH3 , TH4 , TT5 , TH6 , TT1 , TT2 , TT3 , TT4 , TT5 , TT6}
29
If odds against y solving the problem are 3 to 7. Find probability for Y not solving problem