Question: Determine the number of 8digit positive integers whose digits include at least three 7s Determine the number of 8-digit positive integers whose digits include at

Determine the number of 8-digit positive integers whose digits include at least

three 7s.

Determine the number of 8digit positive integers whose digits include at least three 7s

Determine the number of 8-digit positive integers whose digits include at least three 7s.

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:

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:

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:

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:

(iii) Now express your decision rule instead using only the quantities p(Ck), p(Cj ), p(x|Ck), p(x|Cj ), and relate it to the diagram above. [2 marks] (iv) If the classifier decision rule assigns...

Q:

Let r and s be solutions to the quadratic equation x 2 b x + c = 0. For n N, define d0 = 0 d1 = r s dn = b dn1 c dn2 (n 2) Prove that dn = r n s n for all n N. [4 marks] (b) Recall that a commutative...

Q:

In this question assume that p and q are atomic formulae. (a) Compare and contrast path formulae and state formulae in temporal logic. [4 marks] (b) Describe and contrast the meanings of F(G p) and...

Q:

1411116 - Programming I Assignment #3 Due Date: November 30, 2016 Submission Instructions: Submit your assignment on the blackboard link, corresponding to your Section: Please follow the following...

Q:

What is the Python order that can be utilized to show text and numbers on the screen? Mental results may create and continue long after actual injuries of awful injury have mended. While most of...

Q:

9/14/10 12:27 PM Page 321 Chapter dug84356_ch05a.qxd 5 Factoring The sport of skydiving was born in the 1930s soon after the military began using parachutes as a means of deploying troops. Today,...

Q:

9. (a) Evaluate the matrix product Ax, where -}] Hence show that the system of linear equations 7x + 5y = 3 x + 3y = 2 A = 1 and x = can be written as Ax=b where b = (b) The system of equations 2x +...

Q:

freight plane has three large compartments to carry cargo. Weight and volume limitations of these compartments are: Compartment Weight (Tons) Volume (m3 ) Front 10 6800 Center 16 8700 Rear 8 5300...

Q:

According to Thompson L. Leigh: Making the Team (2018) three skills are important to think about when forming any team, these are: technical/functional expertise task-management skills interpersonal...

Q:

Heavenly Chocolates manufactures and sells quality chocolate products at its plant and retail store located in Saratoga Springs, New York. Two years ago, the company developed a Web site and began...

Q:

Suppose RSA-OEAP is used, where the hash function G has a bug and outputs the all zero string. Show how an attacker can (with probability at least 1/2) break the IND-CCA security of RSA in this case.

Q:

Taggart Transcontinental has issued at par a zero-coupon bond with a ten-year maturity. Investors believe there is a 10% chance that Taggart Transcontinental will default on these bonds. If they do...

Q:

On 1 July 2020, Tako began to let out its property for a monthly rent of RM15,000. As of 30 April 2021, rent of 2 months remained outstanding. On 1 May 2020, Tako had a prepaid insurance of RM9,000....

Q:

The weighted-average cost of capital of Eagle Ridge is 8 percent. Last year, one of Eagle Ridge's divisions generated an EVA of $3,200,000, while the divisions assets less its current liabilities...

Q:

Platinum Seating Company has always prided itself on excellent customer service. As part of that service, they want to be sure that when a customer orders a chair it is delivered within 24 hours, 99%...

Q:

3. Imagine a communication situation at work or at home where you felt that you were locked (inflexible). Reflect on three alternative strategies that could have led to you becoming more flexible,...

Q:

4. In the next communication situation you are in, already think through three different communication strategies, which will make you achieve greater flexibility. Then practice on these as soon as...

Q:

2. Now imagine a real situation in your workplace or home situation where someone gives you feedback. a. Did you perceive the feedback as a hidden criticism? b. Did you perceive the feedback as a...