Page 131 - NUMINO Challenge_A1

Answer
Key

Type Study Stone Arrangements 1st 1st 2nd 1st 3rd 1st 4th 1st 5th
1 1 1 6 6 15
0 3 3 10 10
Number of Black Stones Black
Number of White Stones 1 White Black White Black
2 3 4 5
Dominant Color
Difference in Number

2 The pattern units:
Color: Black - White
Difference: The number of stones increases by 1 following the order.
Therefore, there are 7 more black stones in the 7th arrangement.

Problem solving

1 Arrangement 1st 1st 2nd 1st 3rd 1st 4th 1st 5th 1st 6th 1st 7th

Number of Black Stones 0 2 2 6 6 12 12

Number of White Stones 1 1 4 4 9 9 16

Dominant Color White Black White Black White Black White

Difference in Number 1 1 22 334

There are 4 more white stones in the 7th arrangement.

2 1st 2nd 3rd 4th 5th 6th 7th
6 12 20 30 42 56
Number of 2 23 34 45 56 67 78
Stones

Rules 12

There will be 56 stones in the 7th arrangement.

Creative Thinking

1 Find the pattern unit.

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26 NUMINO Challenge A1