hard Set 62 Form Exercise

Number Chain: 2 → x5 → x5 → -43 → -1 → -1 → ?

Show answer

Answer: 5

SubType
number-chain
Start
2
Steps
  • {"op":"x","operand":5}
  • {"op":"x","operand":5}
  • {"op":"-","operand":43}
  • {"op":"-","operand":1}
  • {"op":"-","operand":1}
Difficulty
hard

Number Chain: 7 → x5 → +7 → -3 → +5 → -13 → ?

Show answer

Answer: 31

SubType
number-chain
Start
7
Steps
  • {"op":"x","operand":5}
  • {"op":"+","operand":7}
  • {"op":"-","operand":3}
  • {"op":"+","operand":5}
  • {"op":"-","operand":13}
Difficulty
hard

Number Chain: 8 → x3 → x2 → +2 → x4 → +5 → ?

Show answer

Answer: 205

SubType
number-chain
Start
8
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
  • {"op":"+","operand":2}
  • {"op":"x","operand":4}
  • {"op":"+","operand":5}
Difficulty
hard

Number Chain: 9 → +2 → +11 → +11 → x5 → -147 → ?

Show answer

Answer: 18

SubType
number-chain
Start
9
Steps
  • {"op":"+","operand":2}
  • {"op":"+","operand":11}
  • {"op":"+","operand":11}
  • {"op":"x","operand":5}
  • {"op":"-","operand":147}
Difficulty
hard

Number Chain: 4 → +11 → x2 → +6 → -28 → +10 → ?

Show answer

Answer: 18

SubType
number-chain
Start
4
Steps
  • {"op":"+","operand":11}
  • {"op":"x","operand":2}
  • {"op":"+","operand":6}
  • {"op":"-","operand":28}
  • {"op":"+","operand":10}
Difficulty
hard

Number Chain: 8 → -4 → -3 → x4 → x3 → +1 → ?

Show answer

Answer: 13

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":4}
  • {"op":"-","operand":3}
  • {"op":"x","operand":4}
  • {"op":"x","operand":3}
  • {"op":"+","operand":1}
Difficulty
hard

Number Chain: 11 → x5 → -15 → +9 → x3 → x3 → ?

Show answer

Answer: 441

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":5}
  • {"op":"-","operand":15}
  • {"op":"+","operand":9}
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
Difficulty
hard

Number Chain: 11 → x5 → x3 → x2 → x3 → +5 → ?

Show answer

Answer: 995

SubType
number-chain
Start
11
Steps
  • {"op":"x","operand":5}
  • {"op":"x","operand":3}
  • {"op":"x","operand":2}
  • {"op":"x","operand":3}
  • {"op":"+","operand":5}
Difficulty
hard