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The one of the most frequent questions in the cat exam is : Hoe to find the Unit/Last digit of a given number
here is a shortcut for this
1) we divide numbers 0-9 in three different groups:
Ist Group IInd Group IIIrd GROUP
0 4 2
1 9 3
For Ist Group:
Any power of "0" at unit place gives result 0 at unit place
Any power of "1" at unit place gives result 1 at unit place
Any power of "5" at unit place gives result 5 at unit place
Any power of "6" at unit place gives result 6 at unit place
For IInd Group:
Digit Odd power Even power
4 4 6
9 9 1
For IIIrd Group:
As such there is no specific rule to solve
As you all know a common method is to divide the power by 4 and get the remainder. Now take the unit digit of given number and raise it to the value of remainder obtained.
3^0 = 1 2^0 = 6
7^o = 1 8^0 = 6
I hope u will find this method easy as compared to others and apply in solving questions too
One thing we should never forget in Our life"No matter what the situation is and what the difficulty is we should always be after our dream and one day it will come TRUe....."
so now we should start from today itself!!!
All the puys are informed that those are preparing for cat-11 and are serious can discuss their problems they encounter in quant or any other section and also help their counterparts.One thing I want to say WE together make quant a fun section and score well in Cat-11.
ALL THE BEST puys!!!!!!!!