A Complete Resource Book in Mathematics for JEE Main 2017 · 51 exercises
If the standard deviation of the numbers \(2,3, a\) and 11 is \(3.5\), then which of the following is true? \([2016]\) (A) \(3 a^{2}-23 a+44=0\) (B) \(3 a^{2}-26 a+55=0\) (C) \(3 a^{2}-32 a+84=0\) (D) \(3 a^{2}-34 a+91=0\)
6 step solution
