In a district co operative Bank Mr sunendra invested rs 500 in 2001 rs 1500 in 2002 rs 2500 in 2003 if he keeps on Investing in the bank upto 2020 in the same manner how much investment will there be in his account at the end of 2020?
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the answer is 3570000000
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Answer:
Total investment at the end of 2020 will be Rs. 200000.
Step-by-step explanation:
Mr Surendra is investing the money from year 2001 to 2020 which is in the form of a sequence,
500, 1500, 2500. . . . .20 terms
In this sequence there is a common difference 'd' = 1500 - 500 = Rs 1000
Therefore, the sequence is an arithmetic sequence.
We have to find the sum of 20 terms of this sequence to find the investment at the end of 2020.
Sum of an arithmetic sequence is given by
=
= 10[1000 + 19000]
= Rs. 200000
Therefore, total investment by Surender at the end of year 2020 will be Rs. 200000.
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