medium Set 28 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [21, 20] → [_, _, 10] → [2, _, 1, 9]

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Answer: Row4[2]=9, Row1[1]=41, Row3[1]=11, Row3[2]=10

SubType
number-pyramid
Difficulty
medium
Levels
  • [41]
  • [21,20]
  • [11,10,10]
  • [2,9,1,9]
Base
  • 2
  • 9
  • 1
  • 9
TopValue
41
HiddenCells
  • {"r":3,"c":1,"v":9}
  • {"r":0,"c":0,"v":41}
  • {"r":2,"c":0,"v":11}
  • {"r":2,"c":1,"v":10}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [38] → [_, 25] → [5, _, 17] → [4, 1, _, _]

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Answer: Row4[3]=7, Row2[1]=13, Row4[4]=10, Row3[2]=8

SubType
number-pyramid
Difficulty
medium
Levels
  • [38]
  • [13,25]
  • [5,8,17]
  • [4,1,7,10]
Base
  • 4
  • 1
  • 7
  • 10
TopValue
38
HiddenCells
  • {"r":3,"c":2,"v":7}
  • {"r":1,"c":0,"v":13}
  • {"r":3,"c":3,"v":10}
  • {"r":2,"c":1,"v":8}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [26] → [_, _] → [9, 6, 5] → [4, 5, _, _]

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Answer: Row2[2]=11, Row4[4]=4, Row4[3]=1, Row2[1]=15

SubType
number-pyramid
Difficulty
medium
Levels
  • [26]
  • [15,11]
  • [9,6,5]
  • [4,5,1,4]
Base
  • 4
  • 5
  • 1
  • 4
TopValue
26
HiddenCells
  • {"r":1,"c":1,"v":11}
  • {"r":3,"c":3,"v":4}
  • {"r":3,"c":2,"v":1}
  • {"r":1,"c":0,"v":15}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [39] → [24, _] → [_, 8, _] → [9, 7, 1, _]

Show answer

Answer: Row3[3]=7, Row4[4]=6, Row2[2]=15, Row3[1]=16

SubType
number-pyramid
Difficulty
medium
Levels
  • [39]
  • [24,15]
  • [16,8,7]
  • [9,7,1,6]
Base
  • 9
  • 7
  • 1
  • 6
TopValue
39
HiddenCells
  • {"r":2,"c":2,"v":7}
  • {"r":3,"c":3,"v":6}
  • {"r":1,"c":1,"v":15}
  • {"r":2,"c":0,"v":16}