If the standard deviation of the numbers 2, 3, a and 11 is 3.5, then which of the following is true?[Main 2016]

Question

If the standard deviation of the numbers 2, 3, a and 11 is 3.5, then which of the following is true?

[Main 2016]

Accepted Answer

Correct Answer is : 3a2−32a+84=0

Answer

3a2−32a+84=0

Answer

3a2−34a+91=0

Answer

3a2−23a+44=0

Answer

3a2−26a+55=0

JEE Main 2016 Question Paper