hard Set 33 Form Exercise

Number Chain: 9 → -2 → +10 → +1 → -14 → +3 → ?

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Answer: 7

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":10}
  • {"op":"+","operand":1}
  • {"op":"-","operand":14}
  • {"op":"+","operand":3}
Difficulty
hard

Number Chain: 9 → x4 → +2 → +10 → x2 → x2 → ?

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Answer: 192

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":4}
  • {"op":"+","operand":2}
  • {"op":"+","operand":10}
  • {"op":"x","operand":2}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 3 → x2 → -5 → x3 → +8 → -9 → ?

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Answer: 2

SubType
number-chain
Start
3
Steps
  • {"op":"x","operand":2}
  • {"op":"-","operand":5}
  • {"op":"x","operand":3}
  • {"op":"+","operand":8}
  • {"op":"-","operand":9}
Difficulty
hard

Number Chain: 8 → x4 → x3 → -32 → -51 → +9 → ?

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Answer: 22

SubType
number-chain
Start
8
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"-","operand":32}
  • {"op":"-","operand":51}
  • {"op":"+","operand":9}
Difficulty
hard

Number Chain: 6 → -4 → x4 → +3 → x4 → +9 → ?

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Answer: 53

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":4}
  • {"op":"x","operand":4}
  • {"op":"+","operand":3}
  • {"op":"x","operand":4}
  • {"op":"+","operand":9}
Difficulty
hard

Number Chain: 1 → x4 → x2 → +1 → -2 → -4 → ?

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Answer: 3

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

Number Chain: 9 → -1 → -3 → -4 → x4 → -3 → ?

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Answer: 1

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":3}
  • {"op":"-","operand":4}
  • {"op":"x","operand":4}
  • {"op":"-","operand":3}
Difficulty
hard

Number Chain: 3 → -1 → -1 → -1 → -1 → x2 → ?

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Answer: -2

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