Bissoy.com
Doctors Medicines MCQs Q&A

Rohan wants to devise a 6-digit password for his new project. How many such choices does he have to devise the new password ?

Rohan wants to devise a 6-digit password for his new project. How many such choices does he have to devise the new password ? Correct Answer 9 lakhs

Given:

6 digit password to be formed from 0 to 9 numbers

Calculation:

Let us consider:

First digit of password = 0

Second digit of password can be selected from 0 to 9 = 10 numbers

Similarly, all remaining four digits are also selected from 0 to 9.

When first digit is 0 then other digits can be selected in number of ways,

⇒ 10 × 10 × 10 × 10 × 10 = 105

Similarly, For other numbers 1 to 9.

∴ Number of choices to have password = 9 × 105 = 9 lakhs

Related Questions

In a school, a Science project has been assigned to three students Rajat, Rohan, and Bishal and it was told that they should work together on that project. Working alone Rohan can finish the project in 20 days, it is also given that if Rajat and Bishal work on the project they will take 9 days to complete the project. Bishal alone can complete the project in 15 days. Rohan started working on the project from Monday but after 8 days he left and after that Rajat and Bishal started working on it but Bishal also left 6 days before completion of the work and Rajat completed the remaining project, in how many days will the project be completed and on which day will it be completed?
Sunny, nikki and rohan are working on their dream project after 4 days of working they had an argument. so that, sunny left the work. Remaining work is continued by nikki and rohan. Nikki left the work 2 days before its completion the project. In how many days work is completed if sunny, nikki and rohan separately complete the project in 15, 20 and 30 days respectively
Rohan opens a computer hardware shop in Jaipur after completing a course in computer hardware management. He has employed eleven persons in his showroom. For greater productivity, he divides the work into small tasks and each employee is trained to perform his/her specialised job. The sales persons are allowed to close a deal with a buyer by giving a maximum of 10% discount, whereas the decision to give any further discount rests with Rohan as the final authority. In the earlier days of starting of the business, five of his employees were asked to put in extra hours of work. In return he had promised to give them a special incentive within a year. Therefore, after six months when the business was doing well, he awarded a cash bonus to each of these employees to honour his commitment. However, when it comes to settling the conflicts among his employees, he tends to be more biased towards his male employees.Identify the principle of management which is being violated by Rohan.
Rohan is Sumit's brother. Sumit wants to marry Sujata. Sujata is the daughter of Hari Chand. Rohan wants to divorce Sunita. Sujata and Sunita are sisters. How is Hari Chand related to Rohan?
Rohan is elder brother of Harshda. Rasika is granddaughter of Pooja. Rasika and Kavita are cousin sisters. Rohan is unmarried. Rohan is only uncle of Kavita. Rinki is mother of Kavita. Raj is father of Rohan. Rinki is daughter of?
Quantity 1: The sum of the age of Rohan and Suman at present is 60 years, while the ratio of their ages is 5 ∶ 7. What is the age of Rohan? Quantity 2: The difference between the present age of Rohan and Suman is 12years. 5 years ago the ratio of their ages was 3 ∶ 5 respectively. What is Rohan present age?
Rohan and Sohan started a partnership business with initial investment in the respective ratio of 3: 1. After 4 months, Rohan invested Rs. 2000 more and after 2 more months Sohan invested Rs. 6000 more. If Rohan’s profit share is double of sohan’s profit share after a year, then what was Rohan’s initial investment?
Rohan, Gaurav and Ratika are three siblings. Rohan is 1 year elder to Gaurav. The sum of ages of Rohan and Gaurav is 2 years more than the age of Ratika. After 9 years, the ratio of ages of Rohan and Ratika will be 4 : 5. What will be the age of Ratika 3 years hence?
The admission ticket for an Art Gallery bears a password which is changed after every clock hour based on set of words Chosen for each day. The following is an illustration of the code and steps of rearrangement for subsequent clock hours. The Time is 9 a.m. to 3 p.m. Day’s first password: First Batch – 9 a.m. to 10 a.m. is not ready cloth simple harmony burning Second Batch – 10 a.m. to 11 a.m. ready not is cloth burning harmony simple Third Batch – 11 a.m. to 12 noon cloth is not ready simple harmony burning Fourth Batch – 12 noon to 1 p.m. not is cloth ready burning harmony simple Fifth Batch – 1 p.m. to 2 p.m. ready cloth is not simple harmony burning and so on. If the password for 11 a.m. to 12 noon was –“soap shy miss pen yet the she”, what was the password for the First Batch?
The admission ticket for an exhibition bears a password which is changed after every clock hour based on set of words chosen for each day. The following is an illustration of the code and steps of rearrangement for subsequent clock hours. The time is 9 a.m. to 3 p.m. Day's first password : First Batch ----- 9 a.m. to 10 a.m. is not ready cloth simple harmony burning Second Batch ----- 10 a.m. to 11 a.m. ready not is cloth burning harmony simple Third Batch ----- 11 a.m. to 12 noon cloth is not ready simple harmony burning Fourth Batch ----- 12 noon to 1 p.m. not is cloth ready burning harmony simple Fifth Batch ----- 1 p.m. to 2 p.m. ready cloth is not simple harmony burning and so on. If the password for 11 a.m. to 12 noon was --- "soap shy miss pen yet the she", what was the password for the first batch ?