a) Determine if the credit card number: 4578 45625643 9173 is VALID or NOT? Application 5: Credit CardsLike ISBN and UPC codes, credit card numbers can be easily checked by the "check digit". In thePhilippines, Visa and Master cards are the dominant credit cards in the market, normally 16-digit exceptfor some Visa cards that have 13 digits only.Credit cards numbers can be checked by doubling every other digit starting from the second (whencounted from the right) to the last digit (the last digit being check digit), and summing up all resultingnumbers. If the doubled digit results in a 2-digit number, simply treat the two digits as separate digits. Thecard number is valid only if the sum of the digits under modulo 10 is congruent to 0.ExampleDetermine which credit card number is valid and which is not valid.a) 5234 8213 3410 1298b) 6011 0123 9145 2317Solutionsa)Digits52 38 2134 10 1 2 9 84Doubled(alternate)10 216 26 4 2 0 2 2 18 83Sum = 1+0+2 + 6 + 4 +1+6+ 2 +2 +3+ 6+ 4 + 2 +0+2 + 2 +1+8+8 = 60 mod 10 = 0,the indicated credit card number is VALID.b)Digits 6 0 11012 391 4 5 2 3 17Doubled12 0 2 1 01 4 318 18 5 4 3 2 7(alternate)Sum = 1+ 2+0 + 2 +1+0 + 4 + 3 +1+8 +1+ 8+5 +4 +3 + 2 +7= 53 mod 10 = 3, the indicated credit card number is INVALID.2.4.6

Question

a) Determine if the credit card number: 4578 45625643 9173 is VALID or NOT? Application 5: Credit CardsLike ISBN and UPC codes, credit card numbers can be easily checked by the &#34;check digit&#34;. In thePhilippines, Visa and Master cards are the dominant credit cards in the market, normally 16-digit exceptfor some Visa cards that have 13 digits only.Credit cards numbers can be checked by doubling every other digit starting from the second (whencounted from the right) to the last digit (the last digit being check digit), and summing up all resultingnumbers. If the doubled digit results in a 2-digit number, simply treat the two digits as separate digits. Thecard number is valid only if the sum of the digits under modulo 10 is congruent to 0.ExampleDetermine which credit card number is valid and which is not valid.a) 5234 8213 3410 1298b) 6011 0123 9145 2317Solutionsa)Digits52 38 2134 10 1 2 9 84Doubled(alternate)10 216 26 4 2 0 2 2 18 83Sum = 1+0+2 + 6 + 4 +1+6+ 2 +2 +3+ 6+ 4 + 2 +0+2 + 2 +1+8+8 = 60 mod 10 = 0,the indicated credit card number is VALID.b)Digits 6 0 11012 391 4 5 2 3 17Doubled12 0 2 1 01 4 318 18 5 4 3 2 7(alternate)Sum = 1+ 2+0 + 2 +1+0 + 4 + 3 +1+8 +1+ 8+5 +4 +3 + 2 +7= 53 mod 10 = 3, the indicated credit card number is INVALID.2.4.6

Accepted Answer

a).
As given above, first we need to double the alternate digits. The following table shown the…

etermine if the credit card nu 9173 is VALID or NOT?