UrbanPro

Take Class 12 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

For positive integers a and b, let a triangle b be defined as ab+1. If x and y are positive integers and x triangle y equals 16, which of the following could be a value of y? I.1 II. 2 III. 3 (A) I only (B) II only (C) I and III only (D) II and III only (E) I, II, and III

Asked by Last Modified  

31 Answers

Follow 2
Answer

Please enter your answer

Qualified and experienced tutor in exploring prodigies

xy +1=16 then xy=16-1=15 xy=15 then y can be 1 or 3 as 1 and 3 are factors of 15
Comments

Math magician

C
Comments

Math Magician

c
Comments

I am a Mechanical engineer having 7 years of teaching experience of Maths , Physics and chemistry

C
Comments

SME in Mathematics & Statistics

x triangle y = 16 xy + 1 = 16 xy = 15 since, x and y are positive integers, y can take values 1, 3 or 5. From the options, y can be 1 or 3. Hence, correct option is (C) I and III only.
Comments

Maths Tutor upto Graduation level

As it is given to you that x triangle y = 16 and x triangle y means xy+1 so, xy + 1 = 16 or xy = 15 since, x and y are positive integers, so the product will be 15 only when x and y are any of the following pairs: (1,15),(3,5),(5,3),(15,1). So, the possibility of y are 1,3,5 and 15. Here the options...
read more
As it is given to you that x triangle y = 16 and x triangle y means xy+1 so, xy + 1 = 16 or xy = 15 since, x and y are positive integers, so the product will be 15 only when x and y are any of the following pairs: (1,15),(3,5),(5,3),(15,1). So, the possibility of y are 1,3,5 and 15. Here the options are 1and3 as no 5 and 15 are given in the choices. Hence, y can take values 1 and 3. So, go with C. From the options, y can be 1 or 3. Hence, correct option is (C) I and III only. read less
Comments

Lecturer in Mathematics in IIT level, 22 years experience and qualification M.Sc(Maths)

c
Comments

MATH EXPERT

The equation will be xy+1=16 xy=15 means x and y should be factor of 15 so y can have 1 or 3 C is the correct option
Comments

C
Comments

Mathematics Tutor

C: I and III only
Comments

View 29 more Answers

Related Questions

How many words , with or without meaning can be formed with letters of the word "EQUATION" at a time so that Vowels and Consonents occur together ?
Let us say C = group of consonants and V = group of vowels. For these groups only two cases of arrangement arise CV or VC There are 3 consonants and 5 vowels in the word EQUATION. Under group C...
Kumar Upendra Akshay
If student not studying well beating or caning punishment is necessary because my sum students egreed because of punishment they achieved good score in class
Punishing the child is not correct, make learning fun,and change your teaching style,be friendly with your students
Vishnu
Ampere – second is the unit of a.) conductance. b.) power. c.) energy. d.) charge.
The S.I unit of electric charge is Coulomb (C). 1C= 1A * 1s, where 'A' (Ampere) is the S.I unit of electric current. So, Ampere-second is the unit of charge (option-d). Note: Remember the charge of an...
Kumar Upendra Akshay
Hi friends. I thought of sharing something wonderful i found on web so that it can help all of us & augment our understanding of the topic - 'Limit' . I have shared the complete pdf in my profile gallery or the original web link at the end of this post. An Intuitive Introduction To Limits Limits, the Foundations Of Calculus, seem so artificial and weasely: “Let x approach 0, but not get there, yet we’ll act like it’s there… ” Ugh. Here’s how I learned to enjoy them: What is a limit? Our best prediction of a point we didn’t observe. How do we make a prediction? Zoom into the neighboring points. If our prediction is always in between neighboring points, no matter how much we zoom, that’s our estimate. Why do we need limits? Math has “black hole” scenarios (dividing by zero, going to infinity), and limits give us a reasonable estimate. How do we know we’re right? We don’t. Our prediction, the limit, isn’t required to match reality. But for most natural phenomena, it sure seems to. Limits let us ask “What if?”. If we can directly observe a function at a value (like x=0, or x growing infinitely), we don’t need a prediction. The limit wonders, “If you can see everything except a single value, what do you think is there?”. When our prediction is consistent and improves the closer we look, we feel confident in it. And if the function behaves smoothly, like most real ­world functions do, the limit is where the missing point must be. Key Analogy: Predicting A Soccer Ball (associated pics in original post) Pretend you’re watching a soccer game. Unfortunately, the connection is choppy: So we missed what happened at 4:00. Even so, what’s your prediction for the ball’s position? Easy. Just grab the neighboring instants (3:59 and 4:01) and predict the ball to be somewhere in­ between. And… it works! Real ­world objects don’t teleport? they move through intermediate positions along their path from A to B. Our prediction is “At 4:00, the ball was between its position at 3:59 and 4:01?. Not bad. With a slow ­motion camera, we might even say “At 4:00, the ball was between its positions at 3:59.999 and 4:00.001?. Limits are a strategy for making confident predictions. Limits aren’t the only tool for checking the answers to impossible questions; infinitesimals work too. The key is understanding what we’re trying to predict, then learning the rules of making predictions. Happy math. (Original author - Mr. kalid ) Original post link: http://betterexplained.com/articles/an-intuitive-introduction-to-limits/ My profile link: https://www.urbanpro.com/delhi/pankaj-k/2531974 You may find more interesting stuff and information that can be of some help to you. I will be adding more pdfs in gallery soon . Sharing is caring.
If one wants the pdf in my galley on 'limits' can give a better understanding of the same material.
Pankaj
5 2
6

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons


Guarantee Of Profits To A Partner.
Guarantee is an assurance given to the partner of the firm that at least a fixed amount shall be given to him/her irrespective of his/her actual share in profits of the firm. If actual share in profits...

Types Of Respiration.
Respiration is the biochemical process in which glucose and oxygen converted into carbon dioxide, water and ATP (Adenosine tri - phosphate) ...

Introduction to Trial Balance & its Components
Aims And Objectives At the end of the lesson you be able to: Understand of Sundry Debtors Understanding of Sundry Creditors Understanding of Basics of Trial balance Introduction All...

Smart Work is the key to success
We have always been said that we should work hard in all the tasks alloted to us, but to gain success at a higher rate, we need to work smart..!! Hard work is the key to success but Smart work is the...
N

Nikhil Ladha

0 0
0

Recommended Articles

Looking for Class 12 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Class 12 Tuition Classes?

The best tutors for Class 12 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 12 Tuition with the Best Tutors

The best Tutors for Class 12 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more