Sum sum sum sum sum sums calculator use google to find sum times 9$
Step-by-step explanation:
1st digit is 1 number (1)
2nd digit is (3,4,5) so it's 3 numbers
third digit is (6,7,8,9) is it's 4 numbers
last 7 digits is 10 (0,1,2,3,4,5,6,7,8,9)
multiply
1*3*4*10=120
so answer is 120 phone numbers
Answer:
1/2
Step-by-step explanation:
Answer:
1:
×
2: 
Step-by-step explanation:
1:
Multiply the numbers: 

Write it without exponents:
so
.
2:

Apply exponent rule :
assuming 


Multiply the numbers: 

Hope I helped! If so, may I get Brainliest and a Thanks?
Thank you, have a good one! =)