Question

1.The 104th term and 4th term of an A.P. are 125 and 0. Find the sum of first 35 terms<br /><br />2. Find the sum of all odd positive integers less than 450.<br /><br />3. Find the sum of all natural numbers between 602 and 902 which are not divisible by 4.<br /><br />4.Raghu wish to buy a laptop. He can buy it by paying 40,000 cash or by giving it in<br />10 installments as 4800 in the first month, 24750 in the second month, 24700 in the<br />third month and so on. If he pays the money in this fashion, find<br />(i) total amount paid in 10 installments.<br />(ii) how much extra amount that he has to pay than the cost?<br /><br />very urgent please answer.<br /><br />5.A man repays a loan of 65,000 by paying 400 in the first month and then increasing<br />the payment by 300 every month. How long will it take for him to clear the loan?<br /><br />6.A brick staircase has a total of 30 steps. The bottom step requires 100 bricks. Each<br />successive step requires two bricks less than the previous step.<br />(i) How many bricks are required for the top most step?<br />(ii) How many bricks are required to build the stair case?<br /><br />​

Answer 1

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