The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7?
a.)30 numbers
b.)28 numbers
c.)24 numbers
d.)20 numbers
2.) If there are two tubas in the band, what is the total number of players in the brass section?
a.)8 players
b.)10 players
c.)12 players
d.) 14 players
3.)Original text
If Neil sold 6 dozen muffins, how much profit did he make from the sale?
a.) $40.32
b.) $48.96
c.) $24.48
d.) $57.60
4.)Beginning at 6:50 am, planes leave an airport for New York every 45 minutes.You arrive at the airport at 10:15 am How long will you have to wait for the next plane to New York?
a.) 15 minutes
b.) 20 minutes
c.) 25 minutes
d.) 30 minutes
Answer this Question
1. B
2. Is that the full problem
3. Is that the full problem
4.B
I will ask the question again, don't worry.
To answer this question, we need to determine how many house numbers between 1 and 201 contain at least one 7.
We can do this by looking for patterns in the numbers. First, we know that all odd numbers contain a 1 in the units place. Since the numbers range from 1 to 201, half of them will have 1 in the units place.
Next, we need to determine how many of those numbers also contain a 7. We can observe that the numbers in the range 10-19, 70-79, 100-109, 170-179, and 190-199 all contain a 7. There are 5 groups of 10, so a total of 50 numbers in this range that contain a 7.
Now, we can calculate the total number of house numbers that contain at least one 7 by adding the two numbers we obtained. 50 + 100 = 150.
Therefore, the correct answer is a.) 30 numbers.