hard Set 37 Form Exercise

Number Chain: 2 → x2 → x5 → -10 → +5 → x3 → ?

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Answer: 45

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":5}
  • {"op":"-","operand":10}
  • {"op":"+","operand":5}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 6 → +11 → -16 → x5 → +1 → +8 → ?

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Answer: 14

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":11}
  • {"op":"-","operand":16}
  • {"op":"x","operand":5}
  • {"op":"+","operand":1}
  • {"op":"+","operand":8}
Difficulty
hard

Number Chain: 2 → x3 → +12 → +3 → +1 → +5 → ?

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Answer: 27

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":3}
  • {"op":"+","operand":12}
  • {"op":"+","operand":3}
  • {"op":"+","operand":1}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 9 → x4 → +6 → -37 → +6 → x4 → ?

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Answer: 44

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":4}
  • {"op":"+","operand":6}
  • {"op":"-","operand":37}
  • {"op":"+","operand":6}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 5 → x3 → x4 → x2 → -105 → +12 → ?

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Answer: 27

SubType
number-chain
Start
5
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
  • {"op":"x","operand":2}
  • {"op":"-","operand":105}
  • {"op":"+","operand":12}
Difficulty
hard

Number Chain: 3 → x5 → +1 → -8 → x3 → +12 → ?

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Answer: 36

SubType
number-chain
Start
3
Steps
  • {"op":"x","operand":5}
  • {"op":"+","operand":1}
  • {"op":"-","operand":8}
  • {"op":"x","operand":3}
  • {"op":"+","operand":12}
Difficulty
hard

Number Chain: 4 → x5 → -5 → x4 → x3 → x4 → ?

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Answer: 720

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

Number Chain: 1 → x5 → x2 → +10 → -17 → x2 → ?

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Answer: 6

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":5}
  • {"op":"x","operand":2}
  • {"op":"+","operand":10}
  • {"op":"-","operand":17}
  • {"op":"x","operand":2}
Difficulty
hard