hard Set 78 Form Exercise

Number Chain: 11 → x3 → +2 → -29 → -1 → -3 → ?

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Answer: 2

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":3}
  • {"op":"+","operand":2}
  • {"op":"-","operand":29}
  • {"op":"-","operand":1}
  • {"op":"-","operand":3}
Difficulty
hard

Number Chain: 2 → -1 → x2 → -1 → -1 → +10 → ?

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Answer: 10

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

Number Chain: 11 → x2 → x3 → -29 → +4 → x3 → ?

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Answer: 123

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":3}
  • {"op":"-","operand":29}
  • {"op":"+","operand":4}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 12 → -4 → -3 → -4 → x4 → x3 → ?

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Answer: 12

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

Number Chain: 10 → -3 → x3 → x5 → -21 → -28 → ?

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Answer: 56

SubType
number-chain
Start
10
Steps
  • {"op":"-","operand":3}
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
  • {"op":"-","operand":21}
  • {"op":"-","operand":28}
Difficulty
hard

Number Chain: 4 → +5 → x2 → +1 → +3 → +11 → ?

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Answer: 33

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":5}
  • {"op":"x","operand":2}
  • {"op":"+","operand":1}
  • {"op":"+","operand":3}
  • {"op":"+","operand":11}
Difficulty
hard

Number Chain: 12 → x4 → +5 → -16 → +5 → +4 → ?

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Answer: 46

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":4}
  • {"op":"+","operand":5}
  • {"op":"-","operand":16}
  • {"op":"+","operand":5}
  • {"op":"+","operand":4}
Difficulty
hard

Number Chain: 4 → x3 → -4 → -2 → +10 → x2 → ?

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Answer: 32

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":3}
  • {"op":"-","operand":4}
  • {"op":"-","operand":2}
  • {"op":"+","operand":10}
  • {"op":"x","operand":2}
Difficulty
hard