All tables from 2 to 20

What is the sum of all the integers from 20 to 100, inclusive?

The metals of Group 2 in the periodic table from top to bottom are - Be, Mg, Ca, Sr, & Ba State the common feature in the electronic configuration of all these elements given.

Write all even number from 1 to 20. What fraction of them are multiples of 4?

Fill up the table from the given choice.

Construct a cumulative frequency distribution table from the frequency table given below : {:("Calss Interval","Frequency"),(1-10,12),(11-20,18),(21-30,23),(31-40,15),(41-50,10):}

Contruct a cumulative frequency distributions table from the following frequency table:

Contruct a cumulative frequency distributions table from the following frequency table:

From the frequency distribution table from the following data

Construct a frequency distribution table from the following cumulative frequency distribution : {:("Calss Interval","Frequency"),(5-10,18),(10-15,30),(15-20,46),(20-25,73),(25-30,90):}

{:("Quantity A","Quantity B"),("The product of all the integers","The product of all the integers"),("from 2 to 23, inclusive","from 5 to 24, inclusive"):}