Latest TCS Aptitude Question SOLUTION: 21^3 * 21^2 * 34^7 *46^8 * 77^8

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(#M40021396) TCS question Unit Digit Keep an EYE

21^3 * 21^2 * 34^7 *46^8 * 77^8

Asked In TCS sekar28 (11 years ago)

Unsolved Read Solution (7)

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Read Solution (7) :

akanksha prasad  (11 years ago)

1*1*4*6*1=24
ans=4

Is this solution Helpfull? Yes (16) | No   

Rahul Kumar Mehta  (11 years ago)

First of all if we will multiply
1*1*1*1*1..... till n times then we will get 1 as unit term

now if i will multiply
4*4*4*4......till 7 times then we will get 4 as unit term

now as you know the unit term of 6 is always 6 and it doesn't matter how many
times you are multiplying

now if i will multiply
7*7*7*7......till 8 times we will get 1 as unit term

so we get 1*1*4*6*1 = 24
therefore the unit term is 4

Is this solution Helpfull? Yes (10) | No (2)  

mehak jindal  (11 years ago)

ans 6
1*1*6*6*1=36

Is this solution Helpfull? Yes (4) | No (12)  

Manoji Kumar  (11 years ago)

1*1*4*1*1=4
so,required answer is "4"

Is this solution Helpfull? Yes (3) | No (3)  

Rajul Nema  (11 years ago)

1*1*4*6*1
Unit digit 4

Is this solution Helpfull? Yes (2) | No   

ankita gajanan kulkarni  (11 years ago)

8 1+64+1+1+1

Is this solution Helpfull? Yes | No (1)  

sujatar Rokade  (11 years ago)

1^3*1^2*4^7*6^8*7^8=1*1*4*1*1=4
ans=4

Is this solution Helpfull? Yes | No   

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