Question

1. Find the nth term of the sequence

a. 5, 2, -1, -4, -7, …….

b. Which term in the AP 5, 2, -1, …… is -22?

c. Find the middle term of the AP 6, 13, 20,……., 216

d. In the AP 1, 7, 13, 19, ……, 415, prove that the sum of the middle terms is equal

to the sum of the first and last term.

e. Determine k so that k+2, 4k-6, 3k-2 are the three consecutive terms of an AP.

f. Find the sum of first n natural numbers.

g. The 9th term of an AP is equal to 6 times its 2nd term. If its 5th term is 22. Find the AP.



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Answer 1

Answer:

-8kdkxj4 5th 31358328348e27of5j 5uus