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What should be next in the series- 2 , 10 , 30 , 68 , 130 , ?


The answer is 222.

Zarif Hosain by zarif hosain , 21, India

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1 solution

Zarif Hosain
Jan 29, 2014

It Is quite easy - See the cubes of the number and the number itself to get the answer. 1^{3} + 1 = 2 , 2^{3} + 2 = 10 , 3^{3} + 3 = 30 , 4^{3} + 4 = 68 , 5^{3} + 5 = 130 , 6^{3} + 6 = 222 , Therefore the answer is \boxed{222}

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another solution is 2 , 10 , 30 , 68 , 130 , 222 8 , 20 , 38 , 62 , 92 12 , 18 , 24 , 30 6 , 6 , 6 2,\quad 10,\quad 30,\quad 68,\quad 130,\quad 222\quad \\ \quad 8,\quad 20,\quad 38,\quad 62,\quad 92\\ \quad \quad 12,\quad 18,\quad 24,\quad 30\\ \quad \quad \quad \quad 6,\quad \quad 6,\quad \quad 6 you can observe the pattern so you get the answer 222 \boxed{222}

Rishabh Jain - 7 years ago

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