the marks scored by some students in an examination (out of 1000) are given below in the form of a frequency distribution table: Marks 500-600 600-700 700-750 750-800 800-850 850-950 950-1000 no:of students 25 30 150 240 150 50 15 if a student is selected at random , find the probability that the student scored: (i)less than 750 marks (ii)less than 50%marks (iii)marks between 75% and 95%
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1)41/132
2)0/660
3)2/3
2)0/660
3)2/3
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