hard Set 94 Form Exercise

Number Chain: 12 → x5 → +12 → +7 → -66 → x2 → ?

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Answer: 26

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":5}
  • {"op":"+","operand":12}
  • {"op":"+","operand":7}
  • {"op":"-","operand":66}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 12 → -3 → +11 → +7 → -2 → -9 → ?

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Answer: 16

SubType
number-chain
Start
12
Steps
  • {"op":"-","operand":3}
  • {"op":"+","operand":11}
  • {"op":"+","operand":7}
  • {"op":"-","operand":2}
  • {"op":"-","operand":9}
Difficulty
hard

Number Chain: 3 → +11 → +4 → x5 → x5 → +4 → ?

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Answer: 454

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":11}
  • {"op":"+","operand":4}
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
  • {"op":"+","operand":4}
Difficulty
hard

Number Chain: 3 → +10 → x3 → x2 → -74 → +5 → ?

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Answer: 9

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":10}
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
  • {"op":"-","operand":74}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 9 → x2 → +9 → +1 → -12 → x2 → ?

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Answer: 32

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":2}
  • {"op":"+","operand":9}
  • {"op":"+","operand":1}
  • {"op":"-","operand":12}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 2 → -1 → x5 → -4 → +12 → -5 → ?

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Answer: 8

SubType
number-chain
Start
2
Steps
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"-","operand":4}
  • {"op":"+","operand":12}
  • {"op":"-","operand":5}
Difficulty
hard

Number Chain: 11 → +1 → x4 → -22 → x5 → x2 → ?

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Answer: 260

SubType
number-chain
Start
11
Steps
  • {"op":"+","operand":1}
  • {"op":"x","operand":4}
  • {"op":"-","operand":22}
  • {"op":"x","operand":5}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 8 → +6 → -12 → +11 → -3 → x3 → ?

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Answer: 30

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":6}
  • {"op":"-","operand":12}
  • {"op":"+","operand":11}
  • {"op":"-","operand":3}
  • {"op":"x","operand":3}
Difficulty
hard