easy Set 75 Form Exercise

Number Chain: 5 → +10 → -11 → +9 → ?

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Answer: 13

SubType
number-chain
Start
5
Steps
  • {"op":"+","operand":10}
  • {"op":"-","operand":11}
  • {"op":"+","operand":9}
Difficulty
easy

Number Chain: 4 → +2 → +3 → +5 → ?

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Answer: 14

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

Number Chain: 6 → +3 → +8 → -13 → ?

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Answer: 4

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":3}
  • {"op":"+","operand":8}
  • {"op":"-","operand":13}
Difficulty
easy

Number Chain: 1 → +7 → +1 → +7 → ?

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Answer: 16

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":7}
  • {"op":"+","operand":1}
  • {"op":"+","operand":7}
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: 1 → -1 → -1 → -1 → ?

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Answer: -2

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

Number Chain: 2 → -1 → +7 → -7 → ?

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Answer: 1

SubType
number-chain
Start
2
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":7}
  • {"op":"-","operand":7}
Difficulty
easy

Number Chain: 1 → +9 → -4 → +5 → ?

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Answer: 11

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":9}
  • {"op":"-","operand":4}
  • {"op":"+","operand":5}
Difficulty
easy