Puzzle 749
What number comes next in this sequence:
1 8 9 64 25 216 49 {?}
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Hint
Think of squares and cubes.
Answer
512.
Each term alternates between a square and a cube, 8 3 = 512.
Puzzle 750
What number comes next in this sequence:
3 24 102 312 777 {?}
Puzzle Copyright © Kevin Stone
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Answer
1680.
This is n to the power of 5, starting with 2^5 = 32, with the last digit missing, 7^5 = 16807.
Puzzle 751
What are the next two numbers in this sequence:
202 122 232 425 262 728 {?} {?}
Puzzle Copyright © Kevin Stone
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Answer
293 031: these are the numbers 20, 21, 22, 23 etc grouped into three digits.
Puzzle 752
What number comes next in this sequence:
15 20 20 6 6 19 19 5 14 {?}
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Hint
The sequence is related to 1, 2, 3, 4.
Answer
20.
Each term's initial letter position in the alphabet:
1 = One = O = 15th letter.
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4 = Four = F = 6th letter.
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20 = Ten = T = 20th letter.
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