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Q.

Find the probability that one will get 75 marks in the question paper of 100 marks.


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a

https://lh6.googleusercontent.com/HsvjxDGlHcwoE4r1Ylv6EWc1o3bSZ6THVSNLSdYAPZ30xJFHXNXOlQ70lK9fwJeXkKMvtlLvx5p2DSlpI6rzPVCiMN0fBamPFm2cwvoORqNQdRGz4CKbiNJxk9NqsFhg06MSJ1kCUpF8U97G-pMJTQ

b

https://lh4.googleusercontent.com/tCr8HfnFXygwPRh72d8i-J6Bg8FN6rLqlEieVb3sP_61cCOr7s6JWA8iAYyepfc8fyeUQjIXV6Bs2qlVAOeM3F-2Kn3yhpuZM-Pt77m2esRuYXuXyz_LQw1AlobhW6ncz27nRZ0z9PxaVHkJwrMJXw

c

https://lh3.googleusercontent.com/TDbxbzKbdWKc-89OuTrS51pURBcfVeFKlFIQ2s3vNW-nAOIQY_fhI4bBf_k48kefs3eQGyjhXuIrjmOmp5_KVYxuDRw90Gh6Q2aJARsFAQGyvt6oB4Q-sEj69FGlmRW5oVSabawjnjRqHoRw9YxNNA

d

https://lh6.googleusercontent.com/RUr-mqdNgN1R2N27FnF45LzMnpzEJ2jjccLQUDDKFjjl0_dUDyKEjDHOE7NDOlerAOyLs9-DNgjm-_Qefobm3QX9RdVlJ92XUSIMrDt4cyVdg5IstDqTwBZ_lMEz61fdq_JaWupPpdn5OhcW9sy6bg

answer is A.

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Detailed Solution

Concept- Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.
In this question, we will use the probability formula:
https://lh4.googleusercontent.com/v7yDlOV9a0NbHe6auLPNY-Nnhc80d4a3n1q9EceRNmHKW8urbjOZuCnJjW-iA33JRW0zESqixJYnZlXiuiZ6chX3hThjAg4ppPjKO9OwbXVQ8fb1rjpdWUFmzSesfof4RggySbweG33SH5YDgS5NNwIn this question, we are given the question paper of 100 marks. So, we will get marks between 0 and 100.
First, we will write the sample spaces for the marks that can lie between 0 and 100.
https://lh6.googleusercontent.com/XCaWxBzql6XSZjKtWIOBc0-GvM5khyAD4ANJgvPwDefQV5ofkzTos5gT2FCEfbiA2WzhGhFyVP66oVbmxCCnJW0IPpiSnF1pjwLDMzFCNEziPbKe5AuS2a16oDLcHRUOr-RkTPD2o-xgLLOwGCKdLALet us consider A is the event that can obtain 75 marks.
Then, we get
https://lh5.googleusercontent.com/qtlWoyZA4onQjrTHbO_TK3NnkKmfhtAWKkTqVhlypiC9-kc3ciYWNMZKVPlkN7goiY1EmcjXfDFldFowZg6DSUh3y5N38fLeEtiE1OUVDBQauTPHNdphlY4bBnRvpw1R3YY_Wm4Mayc9Nrh8NmK9uQHence, the correct answer is option 1) https://lh6.googleusercontent.com/HsvjxDGlHcwoE4r1Ylv6EWc1o3bSZ6THVSNLSdYAPZ30xJFHXNXOlQ70lK9fwJeXkKMvtlLvx5p2DSlpI6rzPVCiMN0fBamPFm2cwvoORqNQdRGz4CKbiNJxk9NqsFhg06MSJ1kCUpF8U97G-pMJTQ 
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