medium Set 90 Form Exercise

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [_, 30] → [13, _, 18] → [9, 4, _, 10]

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Answer: Row3[2]=12, Row2[1]=25, Row4[3]=8, Row1[1]=55

SubType
number-pyramid
Difficulty
medium
Levels
  • [55]
  • [25,30]
  • [13,12,18]
  • [9,4,8,10]
Base
  • 9
  • 4
  • 8
  • 10
TopValue
55
HiddenCells
  • {"r":2,"c":1,"v":12}
  • {"r":1,"c":0,"v":25}
  • {"r":3,"c":2,"v":8}
  • {"r":0,"c":0,"v":55}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [39] → [15, _] → [3, _, 12] → [1, _, 10, _]

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Answer: Row4[2]=2, Row4[4]=2, Row2[2]=24, Row3[2]=12

SubType
number-pyramid
Difficulty
medium
Levels
  • [39]
  • [15,24]
  • [3,12,12]
  • [1,2,10,2]
Base
  • 1
  • 2
  • 10
  • 2
TopValue
39
HiddenCells
  • {"r":3,"c":1,"v":2}
  • {"r":3,"c":3,"v":2}
  • {"r":1,"c":1,"v":24}
  • {"r":2,"c":1,"v":12}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [_] → [11, 14] → [4, 7, _] → [1, _, 4, _]

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Answer: Row4[2]=3, Row3[3]=7, Row4[4]=3, Row1[1]=25

SubType
number-pyramid
Difficulty
medium
Levels
  • [25]
  • [11,14]
  • [4,7,7]
  • [1,3,4,3]
Base
  • 1
  • 3
  • 4
  • 3
TopValue
25
HiddenCells
  • {"r":3,"c":1,"v":3}
  • {"r":2,"c":2,"v":7}
  • {"r":3,"c":3,"v":3}
  • {"r":0,"c":0,"v":25}

Number Pyramid: Each block equals the sum of the two blocks below it. Fill the missing values. Pyramid (top to bottom): [31] → [15, 16] → [9, _, _] → [4, _, 1, _]

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Answer: Row3[2]=6, Row4[4]=9, Row4[2]=5, Row3[3]=10

SubType
number-pyramid
Difficulty
medium
Levels
  • [31]
  • [15,16]
  • [9,6,10]
  • [4,5,1,9]
Base
  • 4
  • 5
  • 1
  • 9
TopValue
31
HiddenCells
  • {"r":2,"c":1,"v":6}
  • {"r":3,"c":3,"v":9}
  • {"r":3,"c":1,"v":5}
  • {"r":2,"c":2,"v":10}