hard Set 16 Form Exercise

Number Chain: 8 → x2 → x4 → x3 → x4 → -754 → ?

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Answer: 14

SubType
number-chain
Start
8
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
  • {"op":"-","operand":754}
Difficulty
hard

Number Chain: 2 → x3 → -2 → +9 → +2 → x3 → ?

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Answer: 45

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":3}
  • {"op":"-","operand":2}
  • {"op":"+","operand":9}
  • {"op":"+","operand":2}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 1 → +3 → x4 → -10 → +2 → x3 → ?

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Answer: 24

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":3}
  • {"op":"x","operand":4}
  • {"op":"-","operand":10}
  • {"op":"+","operand":2}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 1 → x3 → x2 → x3 → x3 → +9 → ?

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Answer: 63

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
  • {"op":"+","operand":9}
Difficulty
hard

Number Chain: 3 → x2 → +2 → +11 → +9 → -23 → ?

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Answer: 5

SubType
number-chain
Start
3
Steps
  • {"op":"x","operand":2}
  • {"op":"+","operand":2}
  • {"op":"+","operand":11}
  • {"op":"+","operand":9}
  • {"op":"-","operand":23}
Difficulty
hard

Number Chain: 5 → +6 → +11 → +8 → -16 → +11 → ?

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Answer: 25

SubType
number-chain
Start
5
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":11}
  • {"op":"+","operand":8}
  • {"op":"-","operand":16}
  • {"op":"+","operand":11}
Difficulty
hard

Number Chain: 7 → -2 → +4 → +4 → +10 → x3 → ?

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Answer: 69

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":4}
  • {"op":"+","operand":4}
  • {"op":"+","operand":10}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 7 → -5 → -1 → x2 → x3 → +1 → ?

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Answer: 7

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":5}
  • {"op":"-","operand":1}
  • {"op":"x","operand":2}
  • {"op":"x","operand":3}
  • {"op":"+","operand":1}
Difficulty
hard