hard Set 92 Form Exercise

Number Chain: 12 → x2 → x4 → +11 → -35 → +4 → ?

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Answer: 76

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":4}
  • {"op":"+","operand":11}
  • {"op":"-","operand":35}
  • {"op":"+","operand":4}
Difficulty
hard

Number Chain: 11 → -7 → +5 → +11 → +6 → +8 → ?

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Answer: 34

SubType
number-chain
Start
11
Steps
  • {"op":"-","operand":7}
  • {"op":"+","operand":5}
  • {"op":"+","operand":11}
  • {"op":"+","operand":6}
  • {"op":"+","operand":8}
Difficulty
hard

Number Chain: 9 → x2 → x2 → -13 → x3 → x4 → ?

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Answer: 276

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":2}
  • {"op":"-","operand":13}
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 7 → -3 → x3 → +3 → -12 → +5 → ?

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Answer: 8

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":3}
  • {"op":"x","operand":3}
  • {"op":"+","operand":3}
  • {"op":"-","operand":12}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 5 → -1 → +7 → x5 → x3 → -66 → ?

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Answer: 99

SubType
number-chain
Start
5
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":7}
  • {"op":"x","operand":5}
  • {"op":"x","operand":3}
  • {"op":"-","operand":66}
Difficulty
hard

Number Chain: 6 → +2 → x3 → -10 → +2 → +5 → ?

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Answer: 21

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":2}
  • {"op":"x","operand":3}
  • {"op":"-","operand":10}
  • {"op":"+","operand":2}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 12 → -10 → -1 → x4 → -2 → x2 → ?

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Answer: 4

SubType
number-chain
Start
12
Steps
  • {"op":"-","operand":10}
  • {"op":"-","operand":1}
  • {"op":"x","operand":4}
  • {"op":"-","operand":2}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 11 → -3 → +3 → -4 → x5 → x4 → ?

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Answer: 140

SubType
number-chain
Start
11
Steps
  • {"op":"-","operand":3}
  • {"op":"+","operand":3}
  • {"op":"-","operand":4}
  • {"op":"x","operand":5}
  • {"op":"x","operand":4}
Difficulty
hard