hard Set 45 Form Exercise

Number Chain: 2 → -1 → x5 → +11 → x2 → x5 → ?

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Answer: 160

SubType
number-chain
Start
2
Steps
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"+","operand":11}
  • {"op":"x","operand":2}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 11 → +11 → x2 → +4 → -43 → -3 → ?

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Answer: 2

SubType
number-chain
Start
11
Steps
  • {"op":"+","operand":11}
  • {"op":"x","operand":2}
  • {"op":"+","operand":4}
  • {"op":"-","operand":43}
  • {"op":"-","operand":3}
Difficulty
hard

Number Chain: 7 → +6 → +11 → -20 → x3 → -9 → ?

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Answer: 3

SubType
number-chain
Start
7
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":11}
  • {"op":"-","operand":20}
  • {"op":"x","operand":3}
  • {"op":"-","operand":9}
Difficulty
hard

Number Chain: 6 → x2 → x3 → x4 → -93 → +6 → ?

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Answer: 57

SubType
number-chain
Start
6
Steps
  • {"op":"x","operand":2}
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
  • {"op":"-","operand":93}
  • {"op":"+","operand":6}
Difficulty
hard

Number Chain: 10 → +1 → x3 → +4 → x5 → x5 → ?

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Answer: 925

SubType
number-chain
Start
10
Steps
  • {"op":"+","operand":1}
  • {"op":"x","operand":3}
  • {"op":"+","operand":4}
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 7 → x2 → -3 → +12 → x2 → -18 → ?

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Answer: 28

SubType
number-chain
Start
7
Steps
  • {"op":"x","operand":2}
  • {"op":"-","operand":3}
  • {"op":"+","operand":12}
  • {"op":"x","operand":2}
  • {"op":"-","operand":18}
Difficulty
hard

Number Chain: 10 → +1 → -6 → -4 → +5 → x2 → ?

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Answer: 12

SubType
number-chain
Start
10
Steps
  • {"op":"+","operand":1}
  • {"op":"-","operand":6}
  • {"op":"-","operand":4}
  • {"op":"+","operand":5}
  • {"op":"x","operand":2}
Difficulty
hard

Number Chain: 6 → +9 → -4 → -3 → +10 → +1 → ?

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Answer: 19

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":9}
  • {"op":"-","operand":4}
  • {"op":"-","operand":3}
  • {"op":"+","operand":10}
  • {"op":"+","operand":1}
Difficulty
hard