Mathematics · 2022
JEE Main · 28 June 2022, Shift 2 · Q22
Suppose a class has 7 students. The average marks of these students in the mathematics examination is 62, and their variance is 20. A student fails…
Suppose a class has $\displaystyle 7$ students. The average marks of these students in the mathematics examination is $\displaystyle 62$, and their variance is 20. A student fails in the examination if he/she gets less than $\displaystyle 50$ marks, then in worst case, the number of students can fail is \_\_\_\_.
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.