Page 74 - NUMINO Challenge_A1

Problem solving Key Points

1 If black and white stones are arranged as shown There is 1 more white
below, which stone color will outnumber the other stone up to the first
at the 7th arrangement? What is the difference arrangement and 1
between the number of black and white stones? more black stone up
to the second
1st arrangement.
2nd
3rd
4th

2 If stones are arranged as shown below, how many There are 1 2 2
stones will there be in the 7th arrangement? stones in the first
arrangement and
2 3 6 stones in
the second
arrangement.

1st 2nd 3rd

71Patterns