CBSE Class 10-Mathematics: Chapter –5 Arithmetic Progressions Part 23

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Question 19:

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


Question 20:

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


Let no. be

According to question,

Numbers be

Question 21:

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


Question 22:

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


On solving (i) and (ii)