hard Set 78 Form Exercise

Number Chain: 1 → x2 → -1 → x5 → x2 → +6 → ?

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Answer: 16

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":2}
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"x","operand":2}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 11 → x2 → x4 → x3 → +3 → +2 → ?

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Answer: 269

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"+","operand":3}
  • {"op":"+","operand":2}
Difficulty
hard

Number Chain: 4 → x4 → x4 → -45 → -7 → x3 → ?

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Answer: 36

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":4}
  • {"op":"-","operand":45}
  • {"op":"-","operand":7}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 9 → x4 → +11 → +12 → +1 → +6 → ?

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Answer: 66

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":4}
  • {"op":"+","operand":11}
  • {"op":"+","operand":12}
  • {"op":"+","operand":1}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 11 → +6 → x4 → -38 → -9 → -14 → ?

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Answer: 7

SubType
number-chain
Start
11
Steps
  • {"op":"+","operand":6}
  • {"op":"x","operand":4}
  • {"op":"-","operand":38}
  • {"op":"-","operand":9}
  • {"op":"-","operand":14}
Difficulty
hard

Number Chain: 6 → -1 → x5 → -8 → x3 → x5 → ?

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Answer: 255

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"-","operand":8}
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 11 → x3 → -31 → +12 → +6 → +6 → ?

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Answer: 26

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":3}
  • {"op":"-","operand":31}
  • {"op":"+","operand":12}
  • {"op":"+","operand":6}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 4 → x3 → +1 → x4 → +1 → -28 → ?

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Answer: 25

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":3}
  • {"op":"+","operand":1}
  • {"op":"x","operand":4}
  • {"op":"+","operand":1}
  • {"op":"-","operand":28}
Difficulty
hard