Page 103 - NUMINO Challenge_C1
P. 103
Creative Thinking

1 Numbers from 0 to 300 are written at the four vertices of rectangle
ABCD, as shown below. What is the index of 237 among the numbers
written at the corner?

AD
BC
13 9 5 1
3 7 11 15
2 6 10 14
12 8 4 0

2 The numbers are arranged in the pattern shown below. The number in
row 2, column 4 is 11. What is the number in row 6, column 9?

Column 1234

Row

1 1 2 9 10

2 4 3 8 11

3 5 6 7 12

4 16 15 14 13

5 17 18 19

100 NUMINO Challenge C1
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