One or more outcomes
Question: One or more outcomes of an experiment make an event. Solution: True. Each outcome or a collection of outcomes in an experiment makes an Event....
Read More →On throwing a dice once,
Question: On throwing a dice once, the probability of occurence of a composite number is . Solution: False. The composite numbers in a dice are 4 and 6. Probability = total number of composite numbers/ Total numbers = 2/6 [divide numerator and denominator by 2] = 1/3...
Read More →On throwing a dice once,
Question: On throwing a dice once, the probability of occurence of an even number is . Solution: True. The even numbers in a dice are 2, 4 and 6. Probability = total number of even numbers/ Total numbers = 3/6 [divide numerator and denominator by 3] =...
Read More →If a pair of coins is tossed,
Question: If a pair of coins is tossed, then the number of outcomes are 2. Solution: False. If a pair of coins is tossed, then the number of outcomes are 4, i.e. HH, TT, TH and HT....
Read More →The class size of the class interval 60 – 68 is 8.
Question: The class size of the class interval 60 68 is 8. Solution: True. The difference between the upper and lower limit of a class interval is called the Size of the class interval. i.e. 68 60 = 8...
Read More →10 marks the highest frequency.
Question: 10 marks the highest frequency. Solution: False. 9 marks has highest frequency, i.e. 12. But, 10 has 9 frequency....
Read More →The frequency of more than 8 marks is 21.
Question: The frequency of more than 8 marks is 21. Solution: True. The frequency of more than 8 marks is 12 + 9 = 21 students....
Read More →The frequency of less than
Question: The frequency of less than 8 marks is 29. Solution: False. The frequency of less than 8 marks is 8 + 10 + 5 = 23 students....
Read More →9 students got full marks.
Question: 9 students got full marks. Solution: True. From the table, given that 9 students got 10 out of 10 marks....
Read More →Getting a prime number on throwing a die is an event.
Question: Getting a prime number on throwing a die is an event. Solution: True. Each outcome or a collection of outcomes in an experiment makes an Event. Using the following frequency table, answer question 65-68...
Read More →In a pie chart two or more central
Question: In a pie chart two or more central angles can be equal. Solution: True. Yes, in a pie chart two or more central angles can be equal....
Read More →In a pie chart two central
Question: In a pie chart two central angles can be of 180o. Solution: True. We know that sum of all the central angles in a pie chart is 360o. So, if two angles have 180oeach then the sum of two angles is 360o....
Read More →Sum of all the central angles
Question: Sum of all the central angles in a pie chart is 360. Solution: True....
Read More →The central angle of a sector
Question: The central angle of a sector in a pie chart cannot be more than 180o. Solution: False. The central angle of a sector in a pie chart is more than 180o. But, cannot be more than 360o....
Read More →In a pie chart a whole circle is divided into sectors.
Question: In a pie chart a whole circle is divided into sectors. Solution: True. Pie chart shows the relationship between a whole and its parts....
Read More →In the class intervals
Question: In the class intervals 10 20, 20 30, etc., respectively, 20 lies in the class . Solution: In the class intervals 10 20, 20 30, etc., respectively, 20 lies in the class 20 30. In questions 59 to 81, state whether the statements are true (T) or false (F)....
Read More →In a histogram,
Question: In a histogram, class intervals and frequencies are taken along __________ axis and __________ axis. Solution: In a histogram, class intervals and frequencies are taken along X axis and Y axis....
Read More →When a dice is thrown,
Question: When a dice is thrown, outcomes 1, 2, 3, 4, 5, 6 are equally . Solution: When a dice is thrown, outcomes 1, 2, 3, 4, 5, 6 are equally likely....
Read More →In a histogram
Question: In a histogram __________ are drawn with width equal to a class interval without leaving any gap in between. Solution: In a histogram bars are drawn with width equal to a class interval without leaving any gap in between....
Read More →The class size of the interval 80 – 85 is .
Question: The class size of the interval 80 85 is . Solution: = 85 80 = 5 The class size of the interval 80 85 is 5....
Read More →The total number of outcomes
Question: The total number of outcomes when a coin is tossed is . Solution: The total number of outcomes when a coin is tossed is 2....
Read More →The total number of outcomes
Question: The total number of outcomes when a coin is tossed is . Solution: The total number of outcomes when a coin is tossed is 2....
Read More →When the number of observations is large,
Question: When the number of observations is large, the observations are usually organised in groups of equal width called . Solution: When the number of observations is large, the observations are usually organised in groups of equal width called class intervals....
Read More →How many vertices are there in a
Question: How many vertices are there in a (i) cuboid (ii) tetrahedron (iii) pentagonal prism (iv) square pyramid? Solution: (i) A cuboid has 8 vertices, namelyA, B, C, D, E, F, GandH.(ii) A tetrahedron has 4 vertices, namelyK, L, MandN.(iii) A pentagonal prism has 10 vertices, namelyA, B, C, D, E, F, G, H, IandJ.(iv) A square pyramid has 5 vertices, namelyO, W, X, YandZ....
Read More →The number of times a particular
Question: The number of times a particular observation occurs in a given data is called its Solution: The number of times a particular observation occurs in a given data is called its Frequency....
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