Question: Briey explain to justify your solution and show your work. Consider all strings of 7 decimal digits; for example, 2330179 and 0012998. How many such

Briey explain to justify your solution and show your work.

Consider all strings of 7 decimal digits; for example, 2330179 and 0012998. How many such strings:

(a) Begin with a 1?

(b) Contain at least one 2?

(c) Either begin with a 1 or contain at least one 2?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

The new line character is utilized solely as the last person in each message. On association with the server, a client can possibly (I) question the situation with a client by sending the client's...

Q:

Briefly describe ASCII and Unicode and draw attention to any relationship between them. [3 marks] (b) Briefly explain what a Reader is in the context of reading characters from data. [3 marks] A...

Q:

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

Q:

Let A, B be sets. Define: (a) the Cartesian product (A B) (b) the set of relations R between A and B (c) the identity relation A on the set A [3 marks] Suppose S, T are relations between A and B, and...

Q:

You are designing a new syntax for a programming language like Java, with the intention of making it more approachable to students by using English words instead of punctuation symbols. (a) How does...

Q:

answer the question clearly You are building a flight-control system for which a convincing safety case must be made. Would you assign the tasks of safety requirements engineering, test case...

Q:

In this question you will be asked to reflect on a project you have been involved in or observed, in which a design evolved, or could have evolved, through applying a theory of user behaviour. You...

Q:

In a Hopfield neural network configured as an associative memory, with all of its weights trained and fixed, what three possible behaviours may occur over time in configuration space as the net...

Q:

Consider the trigonometric series a0 2 + X r=1 (ar cos rx + br sin rx) where a0, a1, a2, . . . and b1, b2, . . . are constants and suppose that f(x) is a periodic function of x with period 2. (a)...

Q:

Let i and j be positive integers. (i) Prove that there exist natural numbers a and b such that ai = bj+gcd(i, j). You may use standard results provided that you state them clearly. [4 marks] (ii) Let...

Q:

(a) There are hundreds (possibly thousands?) of ways to oxidize a secondary alcohol to a ketone. Give two examples of reaction conditions that can accomplish this. (b) Which of your two examples is...

Q:

Write a paper on the Competitive Advantage through Differentiation.

Q:

Thhat is the tav cencern for pension funds Tes - liee investment returns a Excise tax of 2 % , b Sabyact le cerperate lay patas e Vary by country d

Q:

how did i find FIFO and LIFO and please tell me what numbers you used and how exactly you got these numbers. Thank you!! Bramble Corp. uses a periodic inventory system and reports the following for...