Page 160 - NUMINO Challenge_D1

Problem solving 4 On Planet A, numbers are carried over when

1 Numbers are carried over when they reach 6. they reach 4. On Planet B, numbers are carried

over when they reach 6.

1 11 Planet A Planet B

32 40312 111 1

25 3144 2 312 2 312
32 3 32 3
101 43500
3 301 3 035

2 Every 1 borrowed becomes a 6. Therefore, the 11 Fibonacci Sequence p.94~p.95

aliens must use a base 6 number system and Example Fibonacci 10, , 5, 10
have 6 fingers.
10, 10, 4 4, 9, 14
66

11 1
33
34

Creative Thinking p.92~p.93 Example 1, 2, 3, 5

1 The numbers that represent each location are as Now 1
After one month 1
shown below. After two months 2
After three months 3
3 After four months 5
9 1 27 After five months 8
After six months 13

Therefore, is 3 9 2 27 48. Fibonacci, 8, 13, Z

2 In order to measure all objects between 1 g and Type 11-1 Climbing Stairs p.96~p.97

13 g with 3 weights, 1 g, 3 g, and 9 g weights

are needed. [See page 87.]

3 The black stone represents 1, 2, 4, 8, and 16 in 1 3rd (1, 1, 1), (2, 1), (1, 2) 3

the order of right to left. If 2 black stones are 2,
added in the same place, a black stone is carried
over to the next place. 3 You can reach the 4th step by climbing 2 steps
from the 2nd step or 1 step from the 3rd step.
Therefore, the number of ways to reach the 4th
step is (the number of ways to reach the 2nd
step) (the number of ways to reach the 3rd
step) 2 3 5 ways.

4 3 5 8 ways

Answer Key