Nisha secured 73, 86, 78 and 75 Mars in 4th test what is the least number of marks she can secure in her next test she has to have a mean score of 18 marks in 5 test
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Nisha secured 73, 86, 78 and 75 marks in 4 tests what is the least number of marks she can secure in her next test if she has to have a mean score of 80 marks in 5 tests
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