CBSE CLASS XI
Q. 1. Write the first five term of each of the sequence
Q. 2. In an A.P. the first term is 2 and the sum of first five terms is one fourth of the sum of next five term. Show that 20th term is --112?
Q. 3. The sum of n terms of two arithmetic progressions are in the ratio Find the ratio of their 18th terms.
Q. 4. Between 1 and 31, m numbers have been inserted in such a way that the resulting sequence is an A.P. and the ratio of 7th and numbers is . Find the value of m.
Q. 5. The difference between any two consecutive interior angles of a polygon is . If the smallest angle is . Find the number of sides of the polygon.
Q. 6. If the sum of first p terms of an A.P. is equal to the sum of first q terms, then find the sum of first term..
Q. 7. If the sum of n terms of an A.P. is . Find the series and its nth term.
Q. 8. Find the sum of all two digit numbers which when divided by 4 , yields 1 as remainder.
Paper By Mr. Shivankar Gupta