medium Set 91 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [18] → [11, _] → [9, 2, _] → [8, 1, _, _]

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Answer: Row2[2]=7, Row4[4]=4, Row3[3]=5, Row4[3]=1

SubType
number-pyramid
Difficulty
medium
Levels
  • [18]
  • [11,7]
  • [9,2,5]
  • [8,1,1,4]
Base
  • 8
  • 1
  • 1
  • 4
TopValue
18
HiddenCells
  • {"r":1,"c":1,"v":7}
  • {"r":3,"c":3,"v":4}
  • {"r":2,"c":2,"v":5}
  • {"r":3,"c":2,"v":1}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [44] → [23, 21] → [12, _, 10] → [7, _, _, _]

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Answer: Row4[3]=6, Row3[2]=11, Row4[4]=4, Row4[2]=5

SubType
number-pyramid
Difficulty
medium
Levels
  • [44]
  • [23,21]
  • [12,11,10]
  • [7,5,6,4]
Base
  • 7
  • 5
  • 6
  • 4
TopValue
44
HiddenCells
  • {"r":3,"c":2,"v":6}
  • {"r":2,"c":1,"v":11}
  • {"r":3,"c":3,"v":4}
  • {"r":3,"c":1,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [51] → [_, 32] → [7, _, _] → [5, _, 10, 10]

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Answer: Row3[3]=20, Row3[2]=12, Row4[2]=2, Row2[1]=19

SubType
number-pyramid
Difficulty
medium
Levels
  • [51]
  • [19,32]
  • [7,12,20]
  • [5,2,10,10]
Base
  • 5
  • 2
  • 10
  • 10
TopValue
51
HiddenCells
  • {"r":2,"c":2,"v":20}
  • {"r":2,"c":1,"v":12}
  • {"r":3,"c":1,"v":2}
  • {"r":1,"c":0,"v":19}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [35] → [18, _] → [_, _, 8] → [3, 6, _, 5]

Show answer

Answer: Row4[3]=3, Row3[2]=9, Row3[1]=9, Row2[2]=17

SubType
number-pyramid
Difficulty
medium
Levels
  • [35]
  • [18,17]
  • [9,9,8]
  • [3,6,3,5]
Base
  • 3
  • 6
  • 3
  • 5
TopValue
35
HiddenCells
  • {"r":3,"c":2,"v":3}
  • {"r":2,"c":1,"v":9}
  • {"r":2,"c":0,"v":9}
  • {"r":1,"c":1,"v":17}