Chapter 16 – Playing with Numbers
Example 3 : If 5 × A = CA then the values of A and C are
10
Aug
Example 3 : If 5 × A = CA then the values of A and C are Example 3 : If 5 × A = CA then the values of A and C are August 10, 2021 Category: Chapter 16 - Playing with Numbers , Maths , NCERT Class 8 ,
Example 2 : The usual form of 100a + b + 10c is
10
Aug
Example 2 : The usual form of 100a + b + 10c is Example 2 : The usual form of 100a + b + 10c is August 10, 2021 Category: Chapter 16 - Playing with Numbers , Maths , NCERT Class 8 ,
Example 1 : Generalised form of a three-digit number xyz is
10
Aug
Example 1 : Generalised form of a three-digit number xyz is Example 1 : Generalised form of a three-digit number xyz is August 10, 2021 Category: Chapter 16 - Playing with Numbers , Maths , NCERT Class 8 ,
4. If 31z5 is a multiple of 3, where z is a digit, what might be the values of z?
13
Oct
4. If 31z5 is a multiple of 3, where z is a digit, what might be the values of z? 4. If 31z5 is a multiple of 3 what might be the values of z? where z is a digit October 13, 2020 Category: Chapter 16 - Playing with Numbers , Maths , NCERT Class [...]
3. If 24x is a multiple of 3, where x is a digit, what is the value of x? (Since 24x is a multiple of 3, its sum of digits 6+x is a multiple of 3; so 6+x is one of these numbers: 0, 3, 6, 9, 12, 15, 18, … . But since x is a digit, it can only be that 6+x = 6 or 9 or 12 or 15. Therefore, x = 0 or 3 or 6 or 9. Thus, x can have any of four different values.)
13
Oct
3. If 24x is a multiple of 3, where x is a digit, what is the value of x? (Since 24x is a multiple of 3, its sum of digits 6+x is a multiple of 3; so 6+x is one of these numbers: 0, 3, 6, 9, 12, 15, 18, … . But since x [...]
Tags:
-12 ,
… . But since x is a digit ,
15 ,
18 ,
3. If 24x is a multiple of 3 ,
3% ,
6 ,
9 ,
it can only be that 6+x = 6 or 9 or 12 or 15. Therefore ,
its sum of digits 6+x is a multiple of 3; so 6+x is one of these numbers: 0 ,
what is the value of x? (Since 24x is a multiple of 3 ,
where x is a digit ,
x = 0 or 3 or 6 or 9. Thus ,
x can have any of four different values.) ,
If 21 y 5 is a multiple of 9, where y is a digit, what is a value of y ?
13
Oct
If 21 y 5 is a multiple of 9, where y is a digit, what is a value of y ? If 21 y 5 is a multiple of 9 what is a value of y ? where y is a digit October 13, 2020 Category: Chapter 16 - Playing with Numbers , Maths , [...]
Find the values of the letters in each of the following and give reasons for the steps involved. 10. 12A + 6AB = A09
13
Oct
Find the values of the letters in each of the following and give reasons for the steps involved. 10. 12A + 6AB = A09 Find the values of the letters in each of the following and give reasons for the steps involved. 10. 12A + 6AB = A09 October 13, 2020 Category: Chapter 16 - [...]
2. If 31z5 is a multiple of 9, where z is a digit, what is the value of z? You will find that there are two answers for the last problem. Why is this so?
13
Oct
2. If 31z5 is a multiple of 9, where z is a digit, what is the value of z? You will find that there are two answers for the last problem. Why is this so? 2. If 31z5 is a multiple of 9 what is the value of z? You will find that there are [...]
1. If 21y5 is a multiple of 9, where y is a digit, what is the value of y?
13
Oct
1. If 21y5 is a multiple of 9, where y is a digit, what is the value of y? 1. If 21y5 is a multiple of 9 what is the value of y? where y is a digit October 13, 2020 Category: Chapter 16 - Playing with Numbers , Maths , NCERT Class 8 ,
Find the values of the letters in each of the following and give reasons for the steps involved. 10. 1 2 A + 6 A B = A 0 9
13
Oct
Find the values of the letters in each of the following and give reasons for the steps involved. 10. 1 2 A + 6 A B = A 0 9 Find the values of the letters in each of the following and give reasons for the steps involved. 10. 1 2 A + 6 A [...]