easy Set 68 Form Exercise

Number Chain: 2 → -1 → +6 → +8 → ?

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Answer: 15

SubType
number-chain
Start
2
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":6}
  • {"op":"+","operand":8}
Difficulty
easy

Number Chain: 8 → +9 → +1 → +2 → ?

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Answer: 20

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":9}
  • {"op":"+","operand":1}
  • {"op":"+","operand":2}
Difficulty
easy

Number Chain: 6 → +5 → -6 → -1 → ?

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Answer: 4

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

Number Chain: 10 → +1 → -10 → -1 → ?

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

Number Chain: 1 → +1 → +5 → +4 → ?

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Answer: 11

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":1}
  • {"op":"+","operand":5}
  • {"op":"+","operand":4}
Difficulty
easy

Number Chain: 3 → -1 → -1 → +9 → ?

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Answer: 10

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
  • {"op":"+","operand":9}
Difficulty
easy

Number Chain: 4 → +1 → +5 → -7 → ?

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Answer: 3

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":1}
  • {"op":"+","operand":5}
  • {"op":"-","operand":7}
Difficulty
easy

Number Chain: 3 → -2 → +1 → -1 → ?

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Answer: 1

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":1}
  • {"op":"-","operand":1}
Difficulty
easy