hard Set 62 Form Exercise

Number Chain: 5 → x5 → x3 → x2 → +6 → x4 → ?

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Answer: 624

SubType
number-chain
Start
5
Steps
  • {"op":"x","operand":5}
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
  • {"op":"+","operand":6}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 1 → +6 → x2 → +12 → x5 → -23 → ?

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Answer: 107

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":6}
  • {"op":"x","operand":2}
  • {"op":"+","operand":12}
  • {"op":"x","operand":5}
  • {"op":"-","operand":23}
Difficulty
hard

Number Chain: 7 → +10 → -4 → x2 → x4 → +7 → ?

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Answer: 111

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

Number Chain: 10 → -1 → +2 → -6 → +10 → x4 → ?

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Answer: 60

SubType
number-chain
Start
10
Steps
  • {"op":"-","operand":1}
  • {"op":"+","operand":2}
  • {"op":"-","operand":6}
  • {"op":"+","operand":10}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 2 → x5 → -9 → -1 → x3 → +5 → ?

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Answer: 5

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":5}
  • {"op":"-","operand":9}
  • {"op":"-","operand":1}
  • {"op":"x","operand":3}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 2 → x4 → -6 → +3 → -1 → x5 → ?

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Answer: 20

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":4}
  • {"op":"-","operand":6}
  • {"op":"+","operand":3}
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 12 → -11 → -1 → +7 → x4 → x5 → ?

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Answer: 140

SubType
number-chain
Start
12
Steps
  • {"op":"-","operand":11}
  • {"op":"-","operand":1}
  • {"op":"+","operand":7}
  • {"op":"x","operand":4}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 5 → -2 → -2 → x4 → -3 → x5 → ?

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Answer: 5

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