hard Set 52 Form Exercise

Number Chain: 1 → +2 → x5 → x5 → -49 → x4 → ?

Show answer

Answer: 104

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":2}
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
  • {"op":"-","operand":49}
  • {"op":"x","operand":4}
Difficulty
hard

Number Chain: 1 → -1 → +10 → -6 → x5 → x4 → ?

Show answer

Answer: 80

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

Number Chain: 8 → +11 → +6 → -6 → -16 → +1 → ?

Show answer

Answer: 4

SubType
number-chain
Start
8
Steps
  • {"op":"+","operand":11}
  • {"op":"+","operand":6}
  • {"op":"-","operand":6}
  • {"op":"-","operand":16}
  • {"op":"+","operand":1}
Difficulty
hard

Number Chain: 4 → -2 → +12 → x3 → x3 → -63 → ?

Show answer

Answer: 63

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":12}
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
  • {"op":"-","operand":63}
Difficulty
hard

Number Chain: 12 → x4 → +9 → x3 → +10 → x5 → ?

Show answer

Answer: 905

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":4}
  • {"op":"+","operand":9}
  • {"op":"x","operand":3}
  • {"op":"+","operand":10}
  • {"op":"x","operand":5}
Difficulty
hard

Number Chain: 9 → +4 → +9 → x3 → x4 → -30 → ?

Show answer

Answer: 234

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":4}
  • {"op":"+","operand":9}
  • {"op":"x","operand":3}
  • {"op":"x","operand":4}
  • {"op":"-","operand":30}
Difficulty
hard

Number Chain: 12 → x4 → -29 → x5 → x3 → +4 → ?

Show answer

Answer: 289

SubType
number-chain
Start
12
Steps
  • {"op":"x","operand":4}
  • {"op":"-","operand":29}
  • {"op":"x","operand":5}
  • {"op":"x","operand":3}
  • {"op":"+","operand":4}
Difficulty
hard

Number Chain: 8 → x2 → +7 → x4 → x3 → -272 → ?

Show answer

Answer: 4

SubType
number-chain
Start
8
Steps
  • {"op":"x","operand":2}
  • {"op":"+","operand":7}
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"-","operand":272}
Difficulty
hard