Find the pattern and please tell how ? . 9, 91, 341, 855, _ [a.2331
b.2060
c.1729
d.1983]
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We write our numbers , As :
2 × 23 - 3 × 22 + 3 × 2 - 1 = 2 × 8 - 3 × 4 + 6 - 1 = 16 - 12 + 6 - 1 = 9
2 × 43 - 3 × 42 + 3 × 4 - 1 = 2 × 64 - 3 ×16 + 12 - 1 = 128 - 48 + 12 - 1 = 91
2 × 63 - 3 × 62 + 3 × 6 - 1 = 2 × 216 - 3 ×36 + 18 - 1 = 432 - 108 + 18 - 1 = 341
2 × 83 - 3 × 82 + 3 × 8 - 1 = 2 × 512 - 3 ×64 + 24 - 1 = 1024 - 192 + 24 - 1 = 855
So , Next number will be
2 × 103 - 3 × 102 + 3 × 10 - 1 = 2 × 1000 - 3 × 100 + 30 - 1 = 2000 - 300 + 30 - 1 = 1729
2 × 23 - 3 × 22 + 3 × 2 - 1 = 2 × 8 - 3 × 4 + 6 - 1 = 16 - 12 + 6 - 1 = 9
2 × 43 - 3 × 42 + 3 × 4 - 1 = 2 × 64 - 3 ×16 + 12 - 1 = 128 - 48 + 12 - 1 = 91
2 × 63 - 3 × 62 + 3 × 6 - 1 = 2 × 216 - 3 ×36 + 18 - 1 = 432 - 108 + 18 - 1 = 341
2 × 83 - 3 × 82 + 3 × 8 - 1 = 2 × 512 - 3 ×64 + 24 - 1 = 1024 - 192 + 24 - 1 = 855
So , Next number will be
2 × 103 - 3 × 102 + 3 × 10 - 1 = 2 × 1000 - 3 × 100 + 30 - 1 = 2000 - 300 + 30 - 1 = 1729
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