hard Set 42 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [90] → [39, 51] → [19, _, _] → [_, 8, _, _] → [_, 6, _, _, 9]

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Answer: Row3[3]=31, Row5[3]=2, Row4[1]=11, Row3[2]=20, Row4[4]=19, Row5[1]=5, Row5[4]=10, Row4[3]=12

SubType
number-pyramid
Difficulty
hard
Levels
  • [90]
  • [39,51]
  • [19,20,31]
  • [11,8,12,19]
  • [5,6,2,10,9]
Base
  • 5
  • 6
  • 2
  • 10
  • 9
TopValue
90
HiddenCells
  • {"r":2,"c":2,"v":31}
  • {"r":4,"c":2,"v":2}
  • {"r":3,"c":0,"v":11}
  • {"r":2,"c":1,"v":20}
  • {"r":3,"c":3,"v":19}
  • {"r":4,"c":0,"v":5}
  • {"r":4,"c":3,"v":10}
  • {"r":3,"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): [_] → [63, _] → [_, 34, 28] → [10, _, _, 13] → [_, _, _, 5, 8]

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Answer: Row5[3]=10, Row5[1]=1, Row3[1]=29, Row2[2]=62, Row1[1]=125, Row4[2]=19, Row4[3]=15, Row5[2]=9

SubType
number-pyramid
Difficulty
hard
Levels
  • [125]
  • [63,62]
  • [29,34,28]
  • [10,19,15,13]
  • [1,9,10,5,8]
Base
  • 1
  • 9
  • 10
  • 5
  • 8
TopValue
125
HiddenCells
  • {"r":4,"c":2,"v":10}
  • {"r":4,"c":0,"v":1}
  • {"r":2,"c":0,"v":29}
  • {"r":1,"c":1,"v":62}
  • {"r":0,"c":0,"v":125}
  • {"r":3,"c":1,"v":19}
  • {"r":3,"c":2,"v":15}
  • {"r":4,"c":1,"v":9}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [76] → [36, 40] → [_, _, _] → [10, 9, _, _] → [3, _, 2, _, _]

Show answer

Answer: Row5[5]=9, Row4[4]=15, Row5[4]=6, Row4[3]=8, Row3[3]=23, Row5[2]=7, Row3[1]=19, Row3[2]=17

SubType
number-pyramid
Difficulty
hard
Levels
  • [76]
  • [36,40]
  • [19,17,23]
  • [10,9,8,15]
  • [3,7,2,6,9]
Base
  • 3
  • 7
  • 2
  • 6
  • 9
TopValue
76
HiddenCells
  • {"r":4,"c":4,"v":9}
  • {"r":3,"c":3,"v":15}
  • {"r":4,"c":3,"v":6}
  • {"r":3,"c":2,"v":8}
  • {"r":2,"c":2,"v":23}
  • {"r":4,"c":1,"v":7}
  • {"r":2,"c":0,"v":19}
  • {"r":2,"c":1,"v":17}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, _] → [19, _, _] → [10, _, 9, 8] → [_, 6, 3, 6, _]

Show answer

Answer: Row2[1]=37, Row1[1]=72, Row5[5]=2, Row2[2]=35, Row3[2]=18, Row3[3]=17, Row5[1]=4, Row4[2]=9

SubType
number-pyramid
Difficulty
hard
Levels
  • [72]
  • [37,35]
  • [19,18,17]
  • [10,9,9,8]
  • [4,6,3,6,2]
Base
  • 4
  • 6
  • 3
  • 6
  • 2
TopValue
72
HiddenCells
  • {"r":1,"c":0,"v":37}
  • {"r":0,"c":0,"v":72}
  • {"r":4,"c":4,"v":2}
  • {"r":1,"c":1,"v":35}
  • {"r":2,"c":1,"v":18}
  • {"r":2,"c":2,"v":17}
  • {"r":4,"c":0,"v":4}
  • {"r":3,"c":1,"v":9}