medium Set 43 Form Exercise

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

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Answer: 34

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

Number Chain: 7 → x4 → x2 → x4 → +7 → ?

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Answer: 231

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

Number Chain: 5 → x4 → x2 → +8 → -23 → ?

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Answer: 25

SubType
number-chain
Start
5
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":2}
  • {"op":"+","operand":8}
  • {"op":"-","operand":23}
Difficulty
medium

Number Chain: 7 → -4 → x4 → -9 → +6 → ?

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Answer: 9

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":4}
  • {"op":"x","operand":4}
  • {"op":"-","operand":9}
  • {"op":"+","operand":6}
Difficulty
medium

Number Chain: 7 → x3 → -13 → +8 → x4 → ?

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Answer: 64

SubType
number-chain
Start
7
Steps
  • {"op":"x","operand":3}
  • {"op":"-","operand":13}
  • {"op":"+","operand":8}
  • {"op":"x","operand":4}
Difficulty
medium

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

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Answer: 123

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

Number Chain: 8 → -1 → +7 → x5 → +8 → ?

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Answer: 78

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":7}
  • {"op":"x","operand":5}
  • {"op":"+","operand":8}
Difficulty
medium

Number Chain: 6 → -2 → x5 → -10 → +9 → ?

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Answer: 19

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":2}
  • {"op":"x","operand":5}
  • {"op":"-","operand":10}
  • {"op":"+","operand":9}
Difficulty
medium