medium Set 11 Form Exercise

Number Chain: 1 → -1 → x3 → +1 → x2 → ?

Show answer

Answer: 2

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

Number Chain: 3 → -2 → +3 → x3 → -8 → ?

Show answer

Answer: 4

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

Number Chain: 7 → -4 → -1 → x5 → +2 → ?

Show answer

Answer: 12

SubType
number-chain
Start
7
Steps
  • {"op":"-","operand":4}
  • {"op":"-","operand":1}
  • {"op":"x","operand":5}
  • {"op":"+","operand":2}
Difficulty
medium

Number Chain: 2 → x2 → +6 → +4 → x3 → ?

Show answer

Answer: 42

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

Number Chain: 3 → -2 → +3 → +4 → +10 → ?

Show answer

Answer: 18

SubType
number-chain
Start
3
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":3}
  • {"op":"+","operand":4}
  • {"op":"+","operand":10}
Difficulty
medium

Number Chain: 9 → x3 → -26 → x3 → x3 → ?

Show answer

Answer: 9

SubType
number-chain
Start
9
Steps
  • {"op":"x","operand":3}
  • {"op":"-","operand":26}
  • {"op":"x","operand":3}
  • {"op":"x","operand":3}
Difficulty
medium

Number Chain: 6 → x2 → -8 → x5 → +8 → ?

Show answer

Answer: 28

SubType
number-chain
Start
6
Steps
  • {"op":"x","operand":2}
  • {"op":"-","operand":8}
  • {"op":"x","operand":5}
  • {"op":"+","operand":8}
Difficulty
medium

Number Chain: 3 → x2 → x5 → x2 → x5 → ?

Show answer

Answer: 300

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