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CBSE Class 12-science Answered

From a set of 100 cards numbered 1 to 100 ,one card is drawn at random.Find the probability that the number on the card is divisible by 6 or 8, but not by 24.
Asked by nikhilpandey140a | 10 Mar, 2016, 06:22: PM
answered-by-expert Expert Answer
begin mathsize 12px style LCM space of space 6 space and space 8 space is space 24. Hence comma space any space number space which space is space divisible space by space both space 6 space and space 8 space is space divisible space by space 24. There space are space 4 space numbers space from space 1 space to space 100 space which space are space divisible space by space 24. space left parenthesis 24 comma space 48 comma space 72 comma space 96 right parenthesis There space are space 16 space multiples space of space 6 space from space 1 space to space 100. space Lets space include space all space these space numbers space in space set space straight A. There space are space 12 space multiples space of space 8 space from space 1 space to space 100. space Lets space include space all space these space numbers space in space set space straight B. We space need space number space of space elements space in space only space straight A space and space only space straight B. The space required space number equals straight n open parentheses straight A close parentheses plus straight n open parentheses straight B close parentheses minus 2 straight n open parentheses straight A large intersection straight B close parentheses equals 16 plus 12 minus 2 cross times 4 equals 20 Probability equals 20 over 100 equals 1 fifth end style
Answered by satyajit samal | 11 Mar, 2016, 01:22: PM

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CBSE 12-science - Maths
Q27 Check In an experiment, 2 balls are drawn containing 4 red balls and 6 black balls. Let X be the number of red balls selected. Complete the table below: Outcome overline P(X) XP(X)
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Asked by khushisjkvm | 04 Jan, 2024, 07:14: PM
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CBSE 12-science - Maths
the question and the solution is in the attachment, can you explain how can they use combinations when combinations does not account for replacement while it is mentioned in the question that replacement is to be taken into account? And can you provide the correct answer.
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Asked by ashwinskrishna2006 | 26 Dec, 2023, 07:34: PM
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CBSE 12-science - Maths
Assuming the probability of a male birth as 1/2, find the probability that a family of 3 children will have: a) two boys and one girl b) at most two girls 
Asked by arjunsah797 | 03 May, 2022, 10:04: AM
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CBSE 12-science - Maths
Plz answer 8 b part
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Asked by lovemaan5500 | 07 Feb, 2020, 09:47: AM
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CBSE 12-science - Maths
20th sum plz
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Asked by lovemaan5500 | 08 Oct, 2019, 09:43: PM
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CBSE 12-science - Maths
14th sum and plz explain its statement
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Asked by lovemaan5500 | 03 Oct, 2019, 05:47: AM
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CBSE 12-science - Maths
21st sum plz
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Asked by lovemaan5500 | 03 Oct, 2019, 05:46: AM
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CBSE 12-science - Maths
four digit numbers are formed by using the digit 1,2,3,4 and 5 without repppearing any digit. Find the probability that a number chosen at random is an odd number
Asked by J.Jeya | 26 Jul, 2019, 09:29: AM
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CBSE 12-science - Maths
Define conditional probability
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 12-science - Maths
If A and B are two events such that P(A) = 0.4, P(B) = 0.55 and = 0.7. Then find P(A | B) and P(B | A). 
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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