medium Set 23 Form Exercise

Number Chain: 7 → -1 → x5 → +4 → x2 → ?

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Answer: 68

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"+","operand":4}
  • {"op":"x","operand":2}
Difficulty
medium

Number Chain: 8 → -1 → -2 → +9 → -3 → ?

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Answer: 11

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":2}
  • {"op":"+","operand":9}
  • {"op":"-","operand":3}
Difficulty
medium

Number Chain: 1 → +7 → x4 → +8 → -6 → ?

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Answer: 34

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":7}
  • {"op":"x","operand":4}
  • {"op":"+","operand":8}
  • {"op":"-","operand":6}
Difficulty
medium

Number Chain: 4 → x5 → x4 → +7 → x5 → ?

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Answer: 435

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":5}
  • {"op":"x","operand":4}
  • {"op":"+","operand":7}
  • {"op":"x","operand":5}
Difficulty
medium

Number Chain: 6 → -1 → -4 → -1 → -1 → ?

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Answer: -1

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":4}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
medium

Number Chain: 4 → x3 → +3 → -14 → +1 → ?

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Answer: 2

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":3}
  • {"op":"+","operand":3}
  • {"op":"-","operand":14}
  • {"op":"+","operand":1}
Difficulty
medium

Number Chain: 6 → x5 → -21 → -8 → x5 → ?

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Answer: 5

SubType
number-chain
Start
6
Steps
  • {"op":"x","operand":5}
  • {"op":"-","operand":21}
  • {"op":"-","operand":8}
  • {"op":"x","operand":5}
Difficulty
medium

Number Chain: 2 → x4 → -3 → x2 → +6 → ?

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Answer: 16

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":4}
  • {"op":"-","operand":3}
  • {"op":"x","operand":2}
  • {"op":"+","operand":6}
Difficulty
medium