hard Set 76 Form Exercise

Number Chain: 8 → +2 → +3 → x2 → +7 → +6 → ?

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Answer: 39

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":2}
  • {"op":"+","operand":3}
  • {"op":"x","operand":2}
  • {"op":"+","operand":7}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 1 → +2 → x4 → +7 → -8 → -2 → ?

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Answer: 9

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":2}
  • {"op":"x","operand":4}
  • {"op":"+","operand":7}
  • {"op":"-","operand":8}
  • {"op":"-","operand":2}
Difficulty
hard

Number Chain: 8 → -5 → x5 → -2 → x5 → +12 → ?

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Answer: 77

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":5}
  • {"op":"x","operand":5}
  • {"op":"-","operand":2}
  • {"op":"x","operand":5}
  • {"op":"+","operand":12}
Difficulty
hard

Number Chain: 6 → -5 → -1 → x5 → x5 → +8 → ?

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Answer: 8

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":5}
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
  • {"op":"+","operand":8}
Difficulty
hard

Number Chain: 6 → -5 → +7 → +9 → +3 → -16 → ?

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Answer: 4

SubType
number-chain
Start
6
Steps
  • {"op":"-","operand":5}
  • {"op":"+","operand":7}
  • {"op":"+","operand":9}
  • {"op":"+","operand":3}
  • {"op":"-","operand":16}
Difficulty
hard

Number Chain: 3 → +4 → +6 → x4 → +8 → -24 → ?

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Answer: 36

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":4}
  • {"op":"+","operand":6}
  • {"op":"x","operand":4}
  • {"op":"+","operand":8}
  • {"op":"-","operand":24}
Difficulty
hard

Number Chain: 7 → +2 → -3 → -1 → -3 → x5 → ?

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Answer: 10

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":2}
  • {"op":"-","operand":3}
  • {"op":"-","operand":1}
  • {"op":"-","operand":3}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 4 → x4 → -5 → -9 → x2 → x4 → ?

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Answer: 16

SubType
number-chain
Start
4
Steps
  • {"op":"x","operand":4}
  • {"op":"-","operand":5}
  • {"op":"-","operand":9}
  • {"op":"x","operand":2}
  • {"op":"x","operand":4}
Difficulty
hard