Please look into the divisibility rules of few number i.e 2,3,4,5 and 6



table> Divisibility TestsRules 2If the number end with 0,2,4,6,8 3If the sum of digits of the number is divisible by 3 4If the number formed by last 2 digit is divisible by 4. 5If the number ends with 0 or 5 6If the number is divisible by both 2 and 3.
Exercise
Note: There is negative marking for incorrect answer.
1) Using divisbility rule, check divisibility by 2.
(a)  256 
(b)  233 
(c)  81 
(d)  50 

2) Using divisbility rule, check divisibility by 3.
(a)  255 
(b)  233 
(c)  81 
(d)  50 

3) Using divisbility rule, check divisibility by 4.
(a)  2255 
(b)  2032 
(c)  9454 
(d)  8660 

4) Using divisbility rule, check divisibility by 5.
(a)  2255 
(b)  2032 
(c)  9454 
(d)  8660 

5) Using divisbility rule, check divisibility by 6.
(a)  333 
(b)  132 
(c)  630 
(d)  820 

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Score:0

Exercise 2

1) What minimum number must be added to the following numbers so that it becomes divisible by 2.
a) 253

b) 5693


2) What minimum number must be added to the following numbers so that it becomes divisible by 3.
a) 253

b) 5693


3) What minimum number must be added to the following numbers so that it becomes divisible by 4.
a) 253

b) 5694


4) What minimum number must be added to the following numbers so that it becomes divisible by 5.
a) 253

b) 5694


5) What minimum number must be added to the following numbers so that it becomes divisible by 6.
a) 253

b) 5693


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Score:

Exercise 3

1) What minimum number must be subtracted to the following numbers so that it becomes divisible by 2.
a) 253

b) 5693


2) What minimum number must be subtracted to the following numbers so that it becomes divisible by 3.
a) 253

b) 5693


3) What minimum number must be subtracted to the following numbers so that it becomes divisible by 4.
a) 253

b) 5694


4) What minimum number must be subtracted to the following numbers so that it becomes divisible by 5.
a) 253

b) 5694


5) What minimum number must be subtracted to the following numbers so that it becomes divisible by 6.
a) 253

b) 5693


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Score: