The question asks per week. So 1.5 cups times 7 days is 10.5 cups.
The pipe leaks 10.5 cups every week.
4.7244m
convert feet to inches using 1 foot = 12 inches
15.5 feet = 15.5 × 12 = 186 inches
multiply this by 2.54 to convert to cm
186 inches = 186 × 2.54 = 472.44 cm
now 1m = 100cm
divide 472.44 by 100 to convert to m
472.44 ÷ 100 =4.7244m
The possible combinations are:
1,9
2,8
3,7
4,6
9,1
8,2
7,3
6,4
Total straws: 9
Probability of first being 1: 1/9
Probability of second being 9: 1/8
Probability of both: 1/9 x 1/8 = 1/72
This will be multiplied by 8 as there are 8 possible combinations:
8 x 1/72
= 8/72
= 1/9
