11th Class
Mathematics
Sample Paper
Mathematics Olympiad - Sample Paper-13
question_answer
If the variable takes values 0, 1, 2, 3, ...... n with frequencies proportional to \[{}^{n}{{C}_{0}},{}^{n}{{C}_{1}},\]\[{}^{n}{{C}_{2}},.....{}^{n}{{C}_{n}}\] respectively, then the variance is