Lesson: Challenging Problem Solving - 13t04

Advanced Number Properties: Know The Rules

[Page 13 of 37]

Picking Numbers works well on many Number Properties questions, but sometimes it's necessary to know Number Property rules in order to solve a problem. At other times, familiarity with the rules will help get you to the correct answer more efficiently. For the following Roman Numeral question, we will focus on the Number Property rules that are being tested. Review the question and then proceed to the task below.

If the sum of prime numbers x and y is an odd number, which of the following CANNOT be true?

I. y2 is odd
II. x – y is odd
III. is an integer

None
I only
III only
I and II
II and III
This question stem suggests that two Number Properties concepts will be central to solving this problem. What are they?

1:

2:

We have identified the two Number Properties concepts with which we're dealing. Now we must figure out how they apply to the question at hand. Our first rule involves odd/even number combinations. Which of the following odd/even combinations results in an odd number? Select all combinations that apply and then click Continue.

Which of the following odd/even combinations results in an odd number?

even + even

odd + odd

even + odd (or odd + even)
Our second rule involves prime numbers. What do we know about the properties of prime numbers? Use your knowledge of prime numbers to complete the rule below, and then click Continue.

is the only prime number; all other prime numbers are .

Back Next div>

Next to display next topic in the chapter.

Video Lessons and 10 Fully Explained Grand Tests

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

Quantitative Aptitude Reasoning English General Knowledge Picture Patterns
Current Menu

Test Prep New

Practice MCQs

Admission Tests

Section Lessons

US Degrees

Pak Universities

Employment

ISSB Selection

ISSB Procedures

Test Preparation

Non-Verbal Tests

Thematic Tests

GTO Tasks

Pak Air Force

Pak Army

Pak Navy

Schools & Colleges

Expressions

Essays

Education News

Scholarships & Study

More for You
MCQ with question Explanations Scholarships and Financial Aid

Quantitative Comparison

Learn techniques how to crack quantitative comparison section

Geometry

How to solve Geometry questions on math section of the test

SAT-Subject Physics

Lessons and practice questions with answers of SAT-II Physics

All in this Category

You may be interested in

Colleges in Sukkur

Find a comprehensive list of major ...

Overseas Pakistanis Foundation Boys College

A chain of colleges by Overseas Pak ...

Ask your Boss for Promotion

Write a promotion letter. Learn to ...

Study in USA

How you can get an opportunity to h ...

Join Pakistan Navy

Read about how you can join Pakista ...

GRE Chemistry

Complete review of GRE Chemistry wi ...

Engineering Colleges Universities in Balochistan

A list of Engineering colleges and ...

Universities in Peshawar

A comprehensive list of universitie ...

About us

EntryTest.com is a test preparation service for students seeking successful career.

About Disclaimer

Quick Test Prep

NUST NET IBA Karachi SAT LUMS LCAT LSE

 

NTS GAT NTS NAT GMAT GRE ACT

Study Abroad

Education Abroad Business Schools MS in USA