hard Set 32 Form Exercise

Number Chain: 2 → +9 → +8 → +8 → +11 → -37 → ?

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Answer: 1

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":9}
  • {"op":"+","operand":8}
  • {"op":"+","operand":8}
  • {"op":"+","operand":11}
  • {"op":"-","operand":37}
Difficulty
hard

Number Chain: 3 → x4 → x5 → +4 → +9 → -55 → ?

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Answer: 18

SubType
number-chain
Start
3
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":5}
  • {"op":"+","operand":4}
  • {"op":"+","operand":9}
  • {"op":"-","operand":55}
Difficulty
hard

Number Chain: 3 → +3 → -3 → +11 → +8 → x2 → ?

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Answer: 44

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":3}
  • {"op":"-","operand":3}
  • {"op":"+","operand":11}
  • {"op":"+","operand":8}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 3 → +5 → -4 → -1 → +2 → -3 → ?

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Answer: 2

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":5}
  • {"op":"-","operand":4}
  • {"op":"-","operand":1}
  • {"op":"+","operand":2}
  • {"op":"-","operand":3}
Difficulty
hard

Number Chain: 3 → x3 → x4 → +11 → x2 → +12 → ?

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Answer: 106

SubType
number-chain
Start
3
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
  • {"op":"+","operand":11}
  • {"op":"x","operand":2}
  • {"op":"+","operand":12}
Difficulty
hard

Number Chain: 4 → x5 → -19 → +3 → x3 → x2 → ?

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Answer: 24

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":5}
  • {"op":"-","operand":19}
  • {"op":"+","operand":3}
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 12 → -10 → -1 → +10 → +9 → x3 → ?

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Answer: 60

SubType
number-chain
Start
12
Steps
  • {"op":"-","operand":10}
  • {"op":"-","operand":1}
  • {"op":"+","operand":10}
  • {"op":"+","operand":9}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 9 → +6 → +4 → -11 → +1 → +1 → ?

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Answer: 10

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":4}
  • {"op":"-","operand":11}
  • {"op":"+","operand":1}
  • {"op":"+","operand":1}
Difficulty
hard