the mean mark of seven students are 55. the mark of 6 student are 52 ,54,55 53,56 and 54 find the mark of seventh student.
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15
Answer:
suppose the mark of seventh student is = x
by taking mean
(52+54+55+53+56+54+x) / 7=55
52+54+55+53+56+54+x = 385
324 + x = 385
x = 385 - 324
x = 61
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Answered by
0
Answer:
61
Step-by-step explanation:
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