Question

If a die is thrown twice, then the mean total count is

• A. 5
• B. 6
• C. 7
• D. 8

Answer 1

Answer: (B)

6

Answer 2

X=	2	3	4	5	6	7	8	9	10	11	12
P(X)=	$\frac { 1 } { 36 }$	$\frac { 2 } { 36 }$	$\frac { 3 } { 36 }$	$\frac { 4 } { 36 }$	$\frac { 5 } { 36 }$	$\frac { 6 } { 36 }$	$\frac { 5 } { 36 }$	$\frac { 4 } { 36 }$	$\frac { 3 } { 36 }$	$\frac { 2 } { 36 }$	$\frac { 1 } { 36 }$

Mean = $\frac { 2 + 6 + 12 + 20 + 30 + 42 + 40 + 36 + 30 + 22 + 12 } { 36 }$