medium Set 61 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 20] → [3, 8, _] → [_, 1, 7, 5]

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Answer: Row4[1]=2, Row2[1]=11, Row1[1]=31, Row3[3]=12

SubType
number-pyramid
Difficulty
medium
Levels
  • [31]
  • [11,20]
  • [3,8,12]
  • [2,1,7,5]
Base
  • 2
  • 1
  • 7
  • 5
TopValue
31
HiddenCells
  • {"r":3,"c":0,"v":2}
  • {"r":1,"c":0,"v":11}
  • {"r":0,"c":0,"v":31}
  • {"r":2,"c":2,"v":12}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [26] → [_, _] → [_, _, 9] → [8, 1, 3, 6]

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Answer: Row3[1]=9, Row2[1]=13, Row3[2]=4, Row2[2]=13

SubType
number-pyramid
Difficulty
medium
Levels
  • [26]
  • [13,13]
  • [9,4,9]
  • [8,1,3,6]
Base
  • 8
  • 1
  • 3
  • 6
TopValue
26
HiddenCells
  • {"r":2,"c":0,"v":9}
  • {"r":1,"c":0,"v":13}
  • {"r":2,"c":1,"v":4}
  • {"r":1,"c":1,"v":13}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [31] → [15, _] → [8, 7, 9] → [_, _, 4, _]

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Answer: Row4[1]=5, Row4[2]=3, Row2[2]=16, Row4[4]=5

SubType
number-pyramid
Difficulty
medium
Levels
  • [31]
  • [15,16]
  • [8,7,9]
  • [5,3,4,5]
Base
  • 5
  • 3
  • 4
  • 5
TopValue
31
HiddenCells
  • {"r":3,"c":0,"v":5}
  • {"r":3,"c":1,"v":3}
  • {"r":1,"c":1,"v":16}
  • {"r":3,"c":3,"v":5}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [15, 22] → [_, _, 14] → [6, 1, _, 7]

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Answer: Row3[1]=7, Row3[2]=8, Row1[1]=37, Row4[3]=7

SubType
number-pyramid
Difficulty
medium
Levels
  • [37]
  • [15,22]
  • [7,8,14]
  • [6,1,7,7]
Base
  • 6
  • 1
  • 7
  • 7
TopValue
37
HiddenCells
  • {"r":2,"c":0,"v":7}
  • {"r":2,"c":1,"v":8}
  • {"r":0,"c":0,"v":37}
  • {"r":3,"c":2,"v":7}