Problem 7.1 General Term in a Pattern
1. Observe the following pattern and complete the remaining lines:
2. Write an expression for the sum of the terms in the nth
row.
3. What is the middle term in the nth row.
Problem 7.2 The Puzzle
For this problem you may use the following results:
By using the numbers 3 exactly three times, together with any of the four
operations (+, –, ×, ÷), brackets and powers of 3
if you need them, try to make an expression equal to the numbers 0 to
9. For example, an expression to obtain 6 is illustrated below.
There is more than one way in some cases. Copy and complete the
following.
0 =
1 =
2 =
3 =
4 =
5 =
6 = 3 × 3 – 3
7 =
8 =
9 =
|
