The mean of the marks obtained by 7 students in a group is 226. If the marks obtained by six of them are 340, 180, 260, 56, 275, 307, then the marks obtained by the seventh student are

125

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174

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164

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200

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Solution

The correct option is C
164

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Q. The mean mark obtained by 7 students in a group is 226. If the marks obtained by six of them are 340, 180, 260, 56, 275 and 307 respectively, find the marks obtained by the seventh student.

The marks (out of $100$ ) obtained by a group of students in science test are $85, 76, 90, 84, 39, 48, 56, 95, 81$ and $75$ . Find the
(i) highest and the lowest marks obtained by the students.
(ii) range of marks obtained.
(iii) mean marks obtained by the group.