Question

How many terms of the series 13 + 23 + 33 + … should be taken to get the sum 14400?

Answer 1

Answer:

In the given series 13 + 23 + 33 + + .... + k3 = 8281 , Sk = 8281 represents the sum of cubes of natural numbers upto k . From this we have to find

In the given series 13 + 23 + 33 + + .... + k3 = 8281 , Sk = 8281 represents the sum of cubes of natural numbers upto k . From this we have to find 13 + 23 + 33

you can find the sum of these cubes, 13, 23, 33, and so on, using ... n n n 1 2 3 ... Seeing that 14400 = 153 doesn't take long. 26m (b) 16m (c) 24m (d) 42m Find the value of 13+23 + 33 +...+153. (a) 11025 (b) 13400 (c) 900 (d) 14400 The sum of 40 terms .

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Answer 2

ANSWER:-

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In the given series 13+23+33+......+k3=14400 represent the sum of cubes of natural numbers upto k. From this we have to find

13+23+33+.......+k3=14400

You can find the numbers by calculating in calculator or ask from any of your classmates.

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