hard Set 22 Form Exercise

Number Chain: 9 → x5 → x2 → +11 → -65 → +3 → ?

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Answer: 39

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":5}
  • {"op":"x","operand":2}
  • {"op":"+","operand":11}
  • {"op":"-","operand":65}
  • {"op":"+","operand":3}
Difficulty
hard

Number Chain: 4 → -2 → -1 → +12 → +9 → +6 → ?

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Answer: 28

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":2}
  • {"op":"-","operand":1}
  • {"op":"+","operand":12}
  • {"op":"+","operand":9}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 11 → x3 → x3 → +12 → -70 → +6 → ?

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Answer: 47

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
  • {"op":"+","operand":12}
  • {"op":"-","operand":70}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 10 → x5 → +10 → x4 → +7 → +1 → ?

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Answer: 248

SubType
number-chain
Start
10
Steps
  • {"op":"x","operand":5}
  • {"op":"+","operand":10}
  • {"op":"x","operand":4}
  • {"op":"+","operand":7}
  • {"op":"+","operand":1}
Difficulty
hard

Number Chain: 11 → -5 → -1 → -4 → -1 → x4 → ?

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

Number Chain: 4 → +9 → +1 → +12 → x4 → -86 → ?

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Answer: 18

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":9}
  • {"op":"+","operand":1}
  • {"op":"+","operand":12}
  • {"op":"x","operand":4}
  • {"op":"-","operand":86}
Difficulty
hard

Number Chain: 8 → -7 → +4 → x4 → x5 → x5 → ?

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Answer: 500

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":7}
  • {"op":"+","operand":4}
  • {"op":"x","operand":4}
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 7 → +4 → -6 → -1 → x4 → +8 → ?

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Answer: 24

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