A bank provides each account holder with a nine-digit card number that is arranged in three blocks,

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A bank provides each account holder with a nine-digit card number that is arranged in three blocks, as shown in the example opposite. Find, in index form, the number of card numbers available if:

a. There are no restrictions on the digits used

b. None of the three blocks can begin with 0

c. The two digits in the second block must not be the same

d. The three-, two- and four-digit numbers on the card are even, odd and even, respectively.

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

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Question Posted: Sep 13, 2021 02:48 AM

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A bank provides each account holder with a nine-digit card number that is arranged in three blocks,

Question:

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Since we have three blocks the first block has 3 numbers the second block with 2 numbers and the ...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

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