Question

1.The 104th term and 4th term of an A.P. are 125 and 0. Find the sum of first 35 terms

2. Find the sum of all odd positive integers less than 450.

3. Find the sum of all natural numbers between 602 and 902 which are not divisible by 4.

4.Raghu wish to buy a laptop. He can buy it by paying 40,000 cash or by giving it in
10 installments as 4800 in the first month, 24750 in the second month, 24700 in the
third month and so on. If he pays the money in this fashion, find
(i) total amount paid in 10 installments.
(ii) how much extra amount that he has to pay than the cost?

very urgent please answer.

5.A man repays a loan of 65,000 by paying 400 in the first month and then increasing
the payment by 300 every month. How long will it take for him to clear the loan?

6.A brick staircase has a total of 30 steps. The bottom step requires 100 bricks. Each
successive step requires two bricks less than the previous step.
(i) How many bricks are required for the top most step?
(ii) How many bricks are required to build the stair case?

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Answer 1

Dear brainly user question 1 answer is here.