easy Set 42 Form Exercise

Number Chain: 7 → +2 → -3 → -2 → ?

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Answer: 4

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":2}
  • {"op":"-","operand":3}
  • {"op":"-","operand":2}
Difficulty
easy

Number Chain: 4 → +3 → +10 → -15 → ?

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Answer: 2

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

Number Chain: 10 → -9 → -1 → -1 → ?

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Answer: -1

SubType
number-chain
Start
10
Steps
  • {"op":"-","operand":9}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 5 → +3 → +9 → +8 → ?

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Answer: 25

SubType
number-chain
Start
5
Steps
  • {"op":"+","operand":3}
  • {"op":"+","operand":9}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 5 → -4 → +4 → +10 → ?

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Answer: 15

SubType
number-chain
Start
5
Steps
  • {"op":"-","operand":4}
  • {"op":"+","operand":4}
  • {"op":"+","operand":10}
Difficulty
easy

Number Chain: 2 → +2 → +2 → -4 → ?

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Answer: 2

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":2}
  • {"op":"+","operand":2}
  • {"op":"-","operand":4}
Difficulty
easy

Number Chain: 6 → -1 → -3 → -1 → ?

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Answer: 1

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":3}
  • {"op":"-","operand":1}
Difficulty
easy

Number Chain: 4 → +3 → +10 → -3 → ?

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Answer: 14

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