Question

give me important questions of sequence and series of class 11
previous answers were not satisfactory​

Answer 1

Answer:

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Question 1:

The sums of n terms of two arithmetic progressions are in the ratio 5n+4: 9n+6. Find the ratio of their 18th terms.

Question 2:

Insert five numbers between 8 and 26 such that resulting sequence is an A.P.

Question 3:

The 5th, 8th, and 11th terms of a GP are p, q and s respectively. Prove that q2 = ps

Question 4:

Show that the sum of (m + n)th and (m – n)th terms of an A.P. is equal to twice the mth term.

Question 5:

Find the sum of integers from 1 to 100 that are divisible by 2 or 5.

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Answer 2

1. The sum of the squares of two numbers is 80 and the square of their differences is 36. the product of two numbers is.
2. The product of two numbers is 120and the sum of of their squares is 289.The sum of the numbers is.