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Q.

Express the sum of odd consecutive cube number for 43.

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a

13+14+15+18

b

13+15+17+19

c

13+17+19+21

d

15+17+19+21

answer is B.

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Detailed Solution

The sum of odd numbers for the cube number 43 is:

1 = 13

3+5 = 8 = 23

7+9+11 = 27 = 33

13+15+17+19 = 64 = 43

Hence, the sum of odd consecutive cube numbers for 43 = 64 which means the pattern is 13+15+17+19.  

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