Visa cards have 16 digits. The first digit is always 4 as in 4xxxxx – with the 2nd to 6th digits being the bank number while the 7th-15th numbers are your account number. The final digit is the check digit.   How many possible Visa card numbers are available?

Q: julian started reading a book with 348 pages. he read 6 pages on each day from monday to friday and…

A: make a table for the pages and week of the days as follows day Monday Tuesday Wednesday Thursday…

Q: from an island-town with 2000 people. He goes to the mainland with a friend and there they catch a…

A: Given, Lau came from an island town with 2000 people. He goes to the mainland with a friend and…

Q: the state department of transportation decides to change the plates to have three letters followed…

A: Given query is to find how many plates are possible if three latters followed by two digits.

Q: Alec is seven years younger than his older brother Ethan. If Alec is 24 years old, how old is Ethan?

A: Alec is seven years younger than his older brother Ethan. If Alec is 24 years old, to find how old…

Q: John does five push-ups on the first day of a 30 day month and then increases the number of push-ups…

A:

Q: Will read 20 pages of his mystery book every day. After reading for 5 days, Will still had 55 pages…

A:

Q: What number do you add to – 6 to get – 11?

A:

Q: If 2* = 4" and 8" = 16°, find

A: If ax = ay , then comparing both side we will get x=y. We will find the relationship between x, y, z…

Q: The number of guest represented is not 85

A: Min  = 15Q1 = 30Median = 45Q2 = 55Max = 100

Q: In October, Mr. Jenkins opened a checking account and made deposits of $864. $1461, $1481, and $134.…

A:

Q: Joanna was driving from Fresno to Bakersfield. Because it was a business meeting, she would be…

A: Let the distance from Fresno to Bakersfield = x miles When she left Fresno, she noted that her…

Q: if seven is added to a number, the sum is 32

A:

Q: If 70 products are sold, the vendor will make or lose money.

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Q: In a batch of 500 high school students, there are 252 students who own a laptop, 176 students who…

A: Here we can use the formula nU = nA+nB-nA∩B+nA∪B'

Q: The telephone prefix for a university is 408. The prefix is followed by four digits.…

A: Given There are 10 options for each of the 4 spots,

Q: A shelf can be packed from end to end with 30 large books or 45 small books. Kevin already packed…

A: Given data:- The shelf can fill with large books, =30 books The shelf can fill with small books, =45…

Q: What is 6 times 4

A:

Q: Find the last three digits of 240 + 341 + 442.

A: Find the last three digits of 2^40 + 3^41 +4^42.

Q: Evaluate   1 - ( 4 . 3 - 2 + 2 )

A: We have to evaluate: 1 - ( 4 . 3 - 2 + 2 )

Q: Every day in Mrs. Yan's class, a student's high score is posted on the boardThe high score for the…

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Q: If 200 students attending business class are subtracted from those who showed up on time and that…

A:

Q: the back of a credit card shows a 3-digit card verification (CVC). The digits can be any number from…

A: Given the back of a credit card shows a 3-digit card verification (CVC). The digits can be any…

Q: find y= 火243X Vうxt

A: given that y=4x2+3x5x+1 find the derivative

Q: Find a number between 3.24 and 3.241 if there is one. If there is no number between them, explain…

A: The number system is said to be the system of writing to express numbers. It is a method of…

Q: The last number is 18 not 1

A:

Q: Find each of the following. \{1,2,5,9,14\} \cup\{1,3,4,8\}

A: Given, 1, 2, 5, 9, 14∪1, 3, 4, 8