medium Set 81 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [21, 27] → [_, 14, _] → [2, 5, 9, _]

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Answer: Row3[3]=13, Row4[4]=4, Row3[1]=7, Row1[1]=48

SubType
number-pyramid
Difficulty
medium
Levels
  • [48]
  • [21,27]
  • [7,14,13]
  • [2,5,9,4]
Base
  • 2
  • 5
  • 9
  • 4
TopValue
48
HiddenCells
  • {"r":2,"c":2,"v":13}
  • {"r":3,"c":3,"v":4}
  • {"r":2,"c":0,"v":7}
  • {"r":0,"c":0,"v":48}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [55] → [28, 27] → [_, 12, _] → [_, 6, _, 9]

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Answer: Row3[3]=15, Row3[1]=16, Row4[1]=10, Row4[3]=6

SubType
number-pyramid
Difficulty
medium
Levels
  • [55]
  • [28,27]
  • [16,12,15]
  • [10,6,6,9]
Base
  • 10
  • 6
  • 6
  • 9
TopValue
55
HiddenCells
  • {"r":2,"c":2,"v":15}
  • {"r":2,"c":0,"v":16}
  • {"r":3,"c":0,"v":10}
  • {"r":3,"c":2,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [20] → [_, _] → [_, 4, 10] → [1, 1, _, 7]

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Answer: Row3[1]=2, Row4[3]=3, Row2[2]=14, Row2[1]=6

SubType
number-pyramid
Difficulty
medium
Levels
  • [20]
  • [6,14]
  • [2,4,10]
  • [1,1,3,7]
Base
  • 1
  • 1
  • 3
  • 7
TopValue
20
HiddenCells
  • {"r":2,"c":0,"v":2}
  • {"r":3,"c":2,"v":3}
  • {"r":1,"c":1,"v":14}
  • {"r":1,"c":0,"v":6}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [27, 22] → [14, 13, 9] → [5, _, _, _]

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Answer: Row4[2]=9, Row1[1]=49, Row4[4]=5, Row4[3]=4

SubType
number-pyramid
Difficulty
medium
Levels
  • [49]
  • [27,22]
  • [14,13,9]
  • [5,9,4,5]
Base
  • 5
  • 9
  • 4
  • 5
TopValue
49
HiddenCells
  • {"r":3,"c":1,"v":9}
  • {"r":0,"c":0,"v":49}
  • {"r":3,"c":3,"v":5}
  • {"r":3,"c":2,"v":4}