CBSE Class 11-science Answered

In the chapter sequences and series, you might get questions related to the following topics:

-Arithmetic Progression (A.P.)

-Geometric Progression (G. P.)

-Relationship Between Arithmetic Mean and Geometric Mean.

-Sum to n Terms of Special Series

Some of the important types of questions are:

Q1. If a², b², c² are in A.P. show that 1/b+c, 1/c+a, 1/a+b are in A.P.

Q2. A sum of Rs. 5250 is paid off in 20 instalments such that each instalment is Rs 7 more than preceding instalment. Calculate the value of the first instalment.

Q3. Sum the given series to n terms: 0.3 + 0.33 +0.333+........

Q4. The sum of two numbers is 6 times their geometric means, show that numbers are in the ratio

3+22 : 3-22

Questions like the above questions are very important. You should practice ample number of questions of these types and many more.