hard Set 24 Form Exercise

Number Chain: 1 → x4 → x5 → x5 → x4 → -77 → ?

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Answer: 323

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
  • {"op":"x","operand":4}
  • {"op":"-","operand":77}
Difficulty
hard

Number Chain: 10 → +8 → -8 → x4 → +12 → -33 → ?

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Answer: 19

SubType
number-chain
Start
10
Steps
  • {"op":"+","operand":8}
  • {"op":"-","operand":8}
  • {"op":"x","operand":4}
  • {"op":"+","operand":12}
  • {"op":"-","operand":33}
Difficulty
hard

Number Chain: 4 → x4 → -12 → +10 → +12 → +9 → ?

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Answer: 35

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":4}
  • {"op":"-","operand":12}
  • {"op":"+","operand":10}
  • {"op":"+","operand":12}
  • {"op":"+","operand":9}
Difficulty
hard

Number Chain: 9 → x5 → -41 → -2 → -1 → -1 → ?

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":5}
  • {"op":"-","operand":41}
  • {"op":"-","operand":2}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
hard

Number Chain: 6 → -1 → -4 → +4 → x3 → x2 → ?

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Answer: 30

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":4}
  • {"op":"+","operand":4}
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
Difficulty
hard

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

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Answer: 28

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

Number Chain: 9 → x2 → x4 → -56 → -14 → +3 → ?

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Answer: 5

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":4}
  • {"op":"-","operand":56}
  • {"op":"-","operand":14}
  • {"op":"+","operand":3}
Difficulty
hard

Number Chain: 7 → +12 → -13 → +9 → x3 → x2 → ?

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Answer: 90

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":12}
  • {"op":"-","operand":13}
  • {"op":"+","operand":9}
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
Difficulty
hard