Is a number divisible by 3 or 4 ?
Hi,
In my this blog I am going to tell you the trick about how to find wether a number is divisible by 3 or 4....
Some of you might think, how it will be used by you, You are not a school going then why you should learn it.....
But you can share this with kids from your house & they can make use of it, & benefit from it.
So ready for it..
Let first know how to find wether a number is divisible by 3.
This is simple one. For example to find weather 13468 is evenly divisble by 3 what we do is.....
add all digits from the first number. that is- 1+3+4+6+8= 22 is it divisible by 3 No,, so 13468 is not divisible by 3.
So the rule is, If sum of all the digits is divisible by 3 then only the whole number is divisible by 3.
want to try some thing-- 7824/3 --- 7+8+2+4=21 its divisble by 3 the number 7824 is ivisble by 3.
Now to find wether a number is divisible by 4.... Its simple again..
Here first you need to look wether a number you have to divide is even or odd.
Only even numbers are divisble by 4.... So if the number is odd you can straightly say that its not divisible by 4.
Now further.... lets try to understand it with example
is 123456 is divisible by 4--- the first condition (that is it must be an even no) is true.
Now Take the last number & add it to 2 times the second last number, if this no. is divisible by 4, then you know that the number is divisible by 4.
so its 6+(5*2)=16, 16 is divisible by 4 therefore 123456 is divisible by 4.
Isin't it simple
Lets try 3436546 / 4
add 6 to(4*2)= 14 which is not divisible by 4.. so the number 3436546 is not divisible by 4..
... try few random numbers, this could be done in mind & much faster.. than our traditional way of dividing & finding.
For more such tricks
visit- http://www.vedicmagic.page.tl
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