Observe the pattern in the following and find the missing numbers.

$121=\frac{(22{)}^2}{1+2+1}$

$12321=\frac{(333{)}^2}{1+2+3+2+1}$

$123454321=.........$

Observe the pattern in the following and find the missing number.

$121=\frac{(22{)}^2}{1+2+1}$

$12321=\frac{(333{)}^2}{1+2+3+2+1}$

$12345654321=\dots \dots$

Observe the following pattern and find the missing number.

$1^2=1$

${11}^2=121$

${111}^2=12321$

${11111}^2=$?

Observe the following pattern and find the missing number:

$1^2=1$

${11}^2=121$

${111}^2=12321$

${111111}^2=.......$

Observe the following pattern and find the missing number.

$1^2=1$

${11}^2=121$

${111}^2=12321$

${1111111}^2= .......$

Observe the following pattern and find the missing numbers.

$7^2=49$

${67}^2=4489$

${6667}^2= .......$

Observe the following pattern and find the missing number.

$7^2=49$

${67}^2=4489$

$(66667{)}^2=$

Observe the following pattern and find the missing number.

$7^2=49$

${67}^2=4489$

$(666667{)}^2=$

Without adding, find the sum.

$1+3+5+7+9+11$