7
10 - 7 = 3
7' 10" = 94"
There are 10 possible numbers that can be chosen. Since the first digit can't be 0, there are 9 selections for the first digit. The second number can include a 0, but can't include the first number chosen, so there are 9 selections for the second digit. Then there are 8 digits for the next number, 7 digits for the next number, and so on. Total telephone numbers are: 9*9*8*7*6*5*4 = 544320 phone numbers.
10 x 12 + 7
7
7 billion
9*8*7*6*5=15,120 ways There are 9 selections to choose from for the first song, 8 for the second, 7 for the third, 6 for the fourth, and 5 for the fifth.
15
7-8 times
1,000 to solve: 10=10-10 while 7= 10-7 divide 10=10-10 by 7= 10-7 which yields the answer of 10-10+7= 103 which is 1,000
10 - 7 = 3
7/10 dimes = 0.7 dime.
7' 10" = 94"
(7/10)/(1/100) = 700/10 = 70
There are 10 possible numbers that can be chosen. Since the first digit can't be 0, there are 9 selections for the first digit. The second number can include a 0, but can't include the first number chosen, so there are 9 selections for the second digit. Then there are 8 digits for the next number, 7 digits for the next number, and so on. Total telephone numbers are: 9*9*8*7*6*5*4 = 544320 phone numbers.
10 stone 7 = 147 pounds