The average of prime numbers between $1$ and $20$ is

  • A

    $9$

  • B

    $9 \frac{5}{8}$

  • C

    $10 \frac{1}{8}$

  • D

    $8$

Similar Questions

The average of five consecutive odd integers is $27 .$ What is the product of the first and the last number?

In a class, the average height of $35$ girls was measured $160 \,cm$. Later, on it was discovered that height of one of the girls was misread as $144\, cm ,$ while her actual height was $104 \,cm.$ What was the actual average height of the girls in the class? (in $cm$) (rounded off to two digits after decimal)

Find average of all prime numbers between $60$ and $90.$

The average of a collection of $20$ measurements was calculated to be $56\, cm .$ But later, it was found that a mistake had occurred in one of the measurements which was recorded as $64 \,cm ,$ but should have been $61 \,cm$. The correct average must be? (in $cm$)

The average of nine numbers is $50.$ The average of the first five numbers is $54$ and that of the last three numbers is $52 .$ Then the sixth number is?