Consecutive Numbers

${\mathrm{S}}_1$ is a series of $4$ consecutive even numbers. If the sum of the reciprocal of the first two numbers of ${\mathrm{S}}_1$ is $\frac{11}{60}$, then what is the reciprocal of the third highest number of ${\mathrm{S}}_1$ ?

The tens digit of a three-digit number is $3$. If the digits at units and hundreds places are interchanged then the number thus formed is $396$ more than the previous one. Also the sum of the units digit and hundreds digit is $14$. Then what is the number?

There are four consecutive positive odd numbers and four consecutive positive even numbers. The sum of the highest even number and the highest odd number is $33$. What is the sum of all the four consecutive odd and even numbers?

The sum of a series of $5$ consecutive odd numbers is $195$. The second lowest number of this series is $5$ less than the second highest number of another series of $5$ consecutive even numbers. What is $40\%$ of the second lowest number of the series of consecutive even numbers?

The sum of $5$ consecutive odd numbers of Set A is $125$. What will be the sum of Set B containing $4$ consecutive odd numbers, if the smallest odd number of Set B is $16$ more than the highest odd number of Set A?

The sum of five consecutive even numbers of set A is $220$. What is the sum of a different set of five consecutive numbers whose second lowest number is $37$ less than double of the lowest number of set  A?

The sum of three consecutive odd numbers and three consecutive even numbers together is $231$. Also, the smallest odd number is $11$ less than the smallest even number. What is the sum of the largest odd number and the largest even number?