PSLE In Cathy's coin pouch, she had only the five coins in the following denominations.
1¢, 1¢, 1¢, 10¢, $1
If she took out two coins from her coin pouch, is $0.70 a possible sum of the 2 coins? Give your answer in number. (Eg Yes = 1; No = 2)
Coins |
To find the sum of 2 coins. |
|
1¢ |
1¢ |
1¢ |
10¢ |
$1 |
1¢ |
2¢ |
2¢ |
2¢ |
11¢ |
101¢ |
1¢ |
2¢ |
2¢ |
2¢ |
11¢ |
101¢ |
1¢ |
2¢ |
2¢ |
2¢ |
11¢ |
101¢ |
10¢ |
11¢ |
11¢ |
11¢ |
20¢ |
110¢ |
$1 |
101¢ |
101¢ |
$101¢ |
110¢ |
200¢ |
Based on the possible sums listed in the table, $0.70 is
not a possible sum of the 2 coins.
Answer(s): 2