medium Set 53 Form Exercise

Number Chain: 2 → +6 → x5 → -7 → -24 → ?

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Answer: 9

SubType
number-chain
Start
2
Steps
  • {"op":"+","operand":6}
  • {"op":"x","operand":5}
  • {"op":"-","operand":7}
  • {"op":"-","operand":24}
Difficulty
medium

Number Chain: 8 → x4 → x3 → +5 → -66 → ?

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Answer: 35

SubType
number-chain
Start
8
Steps
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"+","operand":5}
  • {"op":"-","operand":66}
Difficulty
medium

Number Chain: 7 → +4 → -4 → -6 → -1 → ?

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":4}
  • {"op":"-","operand":4}
  • {"op":"-","operand":6}
  • {"op":"-","operand":1}
Difficulty
medium

Number Chain: 1 → x3 → x3 → -4 → x4 → ?

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Answer: 20

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
  • {"op":"-","operand":4}
  • {"op":"x","operand":4}
Difficulty
medium

Number Chain: 10 → x2 → +3 → -7 → +4 → ?

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Answer: 20

SubType
number-chain
Start
10
Steps
  • {"op":"x","operand":2}
  • {"op":"+","operand":3}
  • {"op":"-","operand":7}
  • {"op":"+","operand":4}
Difficulty
medium

Number Chain: 5 → -3 → x4 → -1 → +9 → ?

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Answer: 16

SubType
number-chain
Start
5
Steps
  • {"op":"-","operand":3}
  • {"op":"x","operand":4}
  • {"op":"-","operand":1}
  • {"op":"+","operand":9}
Difficulty
medium

Number Chain: 5 → +5 → x4 → +2 → -18 → ?

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Answer: 24

SubType
number-chain
Start
5
Steps
  • {"op":"+","operand":5}
  • {"op":"x","operand":4}
  • {"op":"+","operand":2}
  • {"op":"-","operand":18}
Difficulty
medium

Number Chain: 9 → -6 → -2 → +3 → -2 → ?

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Answer: 2

SubType
number-chain
Start
9
Steps
  • {"op":"-","operand":6}
  • {"op":"-","operand":2}
  • {"op":"+","operand":3}
  • {"op":"-","operand":2}
Difficulty
medium