hard Set 65 Form Exercise

Number Chain: 12 → x5 → x3 → x3 → x2 → +2 → ?

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Answer: 1082

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

Number Chain: 3 → -2 → +11 → -5 → -1 → +8 → ?

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Answer: 14

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":11}
  • {"op":"-","operand":5}
  • {"op":"-","operand":1}
  • {"op":"+","operand":8}
Difficulty
hard

Number Chain: 5 → +6 → +11 → x2 → +5 → x4 → ?

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Answer: 196

SubType
number-chain
Start
5
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":11}
  • {"op":"x","operand":2}
  • {"op":"+","operand":5}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 4 → +1 → x2 → +11 → +2 → x2 → ?

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Answer: 46

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

Number Chain: 12 → x3 → -26 → -8 → +6 → x4 → ?

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Answer: 32

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":3}
  • {"op":"-","operand":26}
  • {"op":"-","operand":8}
  • {"op":"+","operand":6}
  • {"op":"x","operand":4}
Difficulty
hard

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

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Answer: 14

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

Number Chain: 8 → -1 → x5 → -11 → -8 → -5 → ?

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Answer: 11

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

Number Chain: 1 → +9 → x4 → x4 → +2 → +3 → ?

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Answer: 165

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":9}
  • {"op":"x","operand":4}
  • {"op":"x","operand":4}
  • {"op":"+","operand":2}
  • {"op":"+","operand":3}
Difficulty
hard