Question 5 - Past Year MCQ - Chapter 15 Class 10 Probability (Term 1)Last updated at Nov. 19, 2021 by Show
Question 5The probability that a number selected at random from the numbers 1, 2, 3, ....., 15 is a multiple of 4, is:(a) 4/15 (b) 2/15(c) 1/5 (d) 1/3
 This video is only available for Teachoo black users TranscriptQuestion 5 The probability that a number selected at random from the numbers 1, 2, 3, ....., 15 is a multiple of 4, is: (a) 4/15 (b) 2/15 (c) 1/5 (d) 1/3 Total numbers = 15 Multiples of 4 are… 4, 8, 12, 16, 20, 24, 28, 32, …. Number of multiples of 4 less than 15 = 3 Thus, P(getting a multiple of 4) = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑚𝑢𝑙𝑡𝑖𝑝𝑙𝑒𝑠 𝑜𝑓 4)/(𝑇𝑜𝑡𝑎𝑙 𝑛𝑢𝑚𝑏𝑒𝑟𝑠) = 3/15 = 𝟏/𝟓 So, the correct answer is (c) The probability that a number selected at random from the numbers 1, 2, 3, ..., 15 is a multiple of 4, is `(A)4/15` `(B)2/15` `(C)1/5` `(D)1/3` Advertisement Remove all ads SolutionCorrect answer: C Concept: Basic Ideas of Probability Is there an error in this question or solution? Advertisement Remove all ads 2013-2014 (March) All India Set 2 Q 1PrevQ 2 APPEARS IN2013-2014 (March) All India Set 2 (with solutions) Q 1 | 1 mark Advertisement Remove all ads RD Sharma Solutions Class 10 Mathematics Solutions for Probability Exercise 13.1 in Chapter 13 - ProbabilityQuestion 39 Probability Exercise 13.1 What is the probability that a number selected from the numbers 1, 2, 3, …, 15 is a multiple of 4? Answer: Solution: The mathematical term describing the possibility that something will happen is "probability. It is the capacity to comprehend and measure the likelihood of various combinations of outcomes. Given: Numbers are from 1 to 15. One number is selected Required to find: Probability that the selected number is a multiple of 4 Total number between from 1 to 15 to 15 Numbers that are multiple of 4 are 4, 8 and 12. We know that, Probability = Number of favourable outcomes/ Total number of outcomes Thus, the probability of selecting a number which a multiple of 4 is 3/15 = 1/5 Was This helpful?
Solution Given numbers are 1,2,3,4,........., 15. Total number of possibilities = 15. Multiple of 4 are { 4,8,12} Number of favourable out comes = 3 Probability that a number selected at random from the numbers is a multiple of 4 =315=15 answer:- (c) 15What is the probability that 1 to 15 is a multiple of 4?` P(getting a multiple of 4) = ` 3/15 = 1/5`.
What is the probability that a number selected from the numbers 1 to 20 is a multiple of 5?That is, 70%.
What is the probability that a number selected from the number 1 to 25 is a prime number when each of the given number is equally likely to be selected?Hence, the Probability of getting a prime number from 1 to 25,P(E) is 9/25. HOPE THIS ANSWER WILL HELP YOU….
What is the probability that a number selected from 1 to 16 is a prime number?From the given 16 numbers, the numbers that are prime numbers are 2,3,5,7,11,13. Hence, \[\dfrac{3}{8}\] is the probability that the number selected from the numbers \[1,2,3,4,5,..........,16\] is a prime number. So, the correct option is “option C”. So, the correct answer is “Option C”.
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