Two dice A and B are rolled. Let the numbers obtained on A and B be 
and 
respectively. If the variance of 
is 
, where p and g are co-prime, then the sum of the positive divisors of p is equal to
Text Solution
Verified by ExpertsC
Given that variance of 
is 
{1, 2, 3, 4, 5, 6}
{1,2,3,4,5,6}
= 0 (6 case)
=-1(5case)
=-3(3 case)
= -2 (4 case)
= -3 (3 case)
= -4 (2 case)
= -5 (1 case)
= 1 (5 case)
= 2 (4 case)
= 3 (3 case)
= 4 (2 case)
= 5 (1 case)
Mean = 0
We know that variance = 
Vanance 
p = 35
Sum of divisors of p = 1 + 5 + 7 + 35 = 48
Option is correct.
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