hard Set 14 Form Exercise

Number Chain: 12 → x2 → x5 → x2 → +11 → x2 → ?

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Answer: 502

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":5}
  • {"op":"x","operand":2}
  • {"op":"+","operand":11}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 11 → +8 → x5 → -2 → +7 → +8 → ?

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Answer: 108

SubType
number-chain
Start
11
Steps
  • {"op":"+","operand":8}
  • {"op":"x","operand":5}
  • {"op":"-","operand":2}
  • {"op":"+","operand":7}
  • {"op":"+","operand":8}
Difficulty
hard

Number Chain: 9 → x5 → +9 → +6 → +7 → x4 → ?

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Answer: 268

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":5}
  • {"op":"+","operand":9}
  • {"op":"+","operand":6}
  • {"op":"+","operand":7}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 1 → x4 → +11 → x4 → +5 → -45 → ?

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Answer: 20

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":4}
  • {"op":"+","operand":11}
  • {"op":"x","operand":4}
  • {"op":"+","operand":5}
  • {"op":"-","operand":45}
Difficulty
hard

Number Chain: 11 → +4 → x3 → +5 → -15 → +10 → ?

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Answer: 45

SubType
number-chain
Start
11
Steps
  • {"op":"+","operand":4}
  • {"op":"x","operand":3}
  • {"op":"+","operand":5}
  • {"op":"-","operand":15}
  • {"op":"+","operand":10}
Difficulty
hard

Number Chain: 1 → +6 → x5 → x4 → x3 → x5 → ?

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Answer: 2100

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":6}
  • {"op":"x","operand":5}
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 8 → -5 → +6 → +1 → -6 → +6 → ?

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Answer: 10

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

Number Chain: 4 → +11 → x3 → x4 → +6 → +9 → ?

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Answer: 195

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":11}
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
  • {"op":"+","operand":6}
  • {"op":"+","operand":9}
Difficulty
hard