JEE Math Practice Question
If the standard deviation of the numbers 2, 3, a and 11 is 3.5, then which of the following is true?
- A.3$$a$$2 - 26$$a$$ + 55 = 0
- B.3$$a$$2 - 32$$a$$ + 84 = 0
- C.3$$a$$2 - 34$$a$$ + 91 = 0
- D.3$$a$$2 - 23$$a$$ + 44 = 0
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