What should be the last digit in 247___ to make the number divisible by 5 but not by 10
Answers
Step-by-step explanation:
th for Class 6 Math Chapter 3 - Playing With Numbers
DOWNLOAD PDF
Share with your friends
Share
Textbook Solutions Class 6 Math Playing With Numbers
Mathematics NCERT Grade 6, Chapter 3: Playing with numbers- Just like the chapter name is interesting, the content of the chapter is also made interesting and attractive to make the purpose of learning fun. This chapter includes a description of different activities and games, students will definitely find the chapter interesting. The chapter covers the following topics:
1. Factors and multiples
A factor of a number is an exact divisor of that number.
A game about the spotting factor is given in this section. Its a must try as it will attract students to learn in detail about factors.
It is concluded that a number is a multiple of each of its factors.
Every number is a factor of itself.
1 is a factor of every number
Numbers of factors of a given number are finite.
Every number is a multiple of itself
The number of multiples of a given number is infinite.
2. Prime and composite numbers
The numbers other than 1 whose only factors are 1 and the number itself are called prime numbers.
Numbers having more than two factors are called composite numbers.
1 is neither prime nor a composite number.
2 is the smallest prime number which is even.
Every prime number except 2 is odd.
3. Tests for divisibility of numbers: Divisibility tests of the following numbers are discussed:
Divisibility by 10
Divisibility by 5
Divisibility by 2
Divisibility by 3
Divisibility by 6
Divisibility by 4
Divisibility by 8
Divisibility by 9
Divisibility by 11
4. Common factors and common multiples
5. Prime factorisation
6. Highest common factor
The HCF of two or more given numbers is the highest of their common factors.
7. Lowest common multiple
The LCM of two or more given numbers is the lowest of their common multiple.
8. Some problems on HCF and LCM
Each section is supplemented with numerous definitions, examples, activities, images and flow charts, etc. which makes it more engaging. The chapter, ends with a summary for quick revision.
Step-by-step explanation:
Don't know the answer of this question.