# CBSE Class 10-Mathematics: Chapter – 5 Arithmetic Progressions Part 23 (For CBSE, ICSE, IAS, NET, NRA 2022)

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**Question 19**:

If term of an A. P is twice the term, show that term is twice the term.

**Answer**:

**Question 20**:

The sum of four numbers in AP is and the greatest number four times the least. Find the numbers.

**Answer**:

Let no. be

According to question,

Numbers be

**Question 21**:

Find the sum of all integers between and which are multiples of .

**Answer**:

**Question 22**:

If term of an A. P is and the term is , show that the sum of terms is .

**Answer**:

On solving (i) and (ii)