hard Set 47 Form Exercise

Number Chain: 6 → +10 → -11 → +3 → +3 → -2 → ?

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Answer: 9

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":10}
  • {"op":"-","operand":11}
  • {"op":"+","operand":3}
  • {"op":"+","operand":3}
  • {"op":"-","operand":2}
Difficulty
hard

Number Chain: 11 → -3 → x2 → -13 → x3 → x5 → ?

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Answer: 45

SubType
number-chain
Start
11
Steps
  • {"op":"-","operand":3}
  • {"op":"x","operand":2}
  • {"op":"-","operand":13}
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 2 → x3 → x5 → +4 → -4 → -19 → ?

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Answer: 11

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
  • {"op":"+","operand":4}
  • {"op":"-","operand":4}
  • {"op":"-","operand":19}
Difficulty
hard

Number Chain: 2 → x4 → -3 → -3 → x4 → -2 → ?

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Answer: 6

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

Number Chain: 2 → +1 → +11 → -10 → -1 → -1 → ?

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Answer: 2

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":1}
  • {"op":"+","operand":11}
  • {"op":"-","operand":10}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
hard

Number Chain: 5 → x2 → -8 → +10 → -8 → -2 → ?

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Answer: 2

SubType
number-chain
Start
5
Steps
  • {"op":"x","operand":2}
  • {"op":"-","operand":8}
  • {"op":"+","operand":10}
  • {"op":"-","operand":8}
  • {"op":"-","operand":2}
Difficulty
hard

Number Chain: 7 → +10 → +4 → x4 → +6 → +12 → ?

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Answer: 102

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":10}
  • {"op":"+","operand":4}
  • {"op":"x","operand":4}
  • {"op":"+","operand":6}
  • {"op":"+","operand":12}
Difficulty
hard

Number Chain: 12 → -11 → -1 → -1 → x4 → x4 → ?

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Answer: -16

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