Creativity Te Thimbien $825.$ Find the average of the following numbers. $06,0,12,14,13[$JNV $2012](1)9(2)7(3)12(4)116.$ The average of the height of $5$ students having height $30,40,50,60,70$ is $[$JNV $2011](1)40(2)50(3)55(4)457.$ The average score of a cricketer in $2$ matches is $27$ and in $3$ other matches is $32.$ Then, his average score in all the $5$ matches is $[$JNV $2011](1)28(2)29(3)30.(4)318.$ The average of $20$ values is $18.$ If $3$ is subtracted from each of the values, then the new average will be $[$JNV $2009](1)21(2)15(3)16(4)179.$ The average age of $4$ children is $11yr.$ If the ages of $3$ children are $9yr,12yr$ and $10yr,$ find the age of the fourth child. $[$JNV $2001](1)12yr(3)13yr(2)2$