hard Set 73 Form Exercise

Number Chain: 9 → -2 → +1 → x3 → x3 → x5 → ?

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Answer: 360

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":1}
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 11 → -4 → x5 → x2 → -68 → +5 → ?

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Answer: 7

SubType
number-chain
Start
11
Steps
  • {"op":"-","operand":4}
  • {"op":"x","operand":5}
  • {"op":"x","operand":2}
  • {"op":"-","operand":68}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 3 → +5 → x2 → +12 → -5 → +11 → ?

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Answer: 34

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":5}
  • {"op":"x","operand":2}
  • {"op":"+","operand":12}
  • {"op":"-","operand":5}
  • {"op":"+","operand":11}
Difficulty
hard

Number Chain: 9 → x4 → x5 → -142 → x3 → x4 → ?

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Answer: 456

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":5}
  • {"op":"-","operand":142}
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 3 → -1 → -1 → +8 → x4 → +1 → ?

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Answer: 37

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
  • {"op":"+","operand":8}
  • {"op":"x","operand":4}
  • {"op":"+","operand":1}
Difficulty
hard

Number Chain: 9 → x3 → x2 → +12 → -5 → x4 → ?

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Answer: 244

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
  • {"op":"+","operand":12}
  • {"op":"-","operand":5}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 1 → +7 → -7 → x2 → x5 → x4 → ?

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Answer: 40

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

Number Chain: 6 → -1 → +7 → -4 → -5 → +3 → ?

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Answer: 6

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":7}
  • {"op":"-","operand":4}
  • {"op":"-","operand":5}
  • {"op":"+","operand":3}
Difficulty
hard