Latest TCS Aptitude Question SOLUTION: Find the remainder when 128 ^1000 is divided by 153?

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(#M40026164) TCS Numerical Ability question Keep an EYE

Find the remainder when 128 ^1000 is divided by 153?

Asked In TCS (11 years ago)

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Deepika Jain  (11 years ago)

128^1000/153 = 128^1000/17.9

now when 128^1000 is divided by 17 rem

2^7000/17 = 16^1750/17 = (17-1)^1750/17 so rem = 1

it can be represented by 17a +1.............(1)

when 128^1000 is divided by 9

2(3*333 + 1)mod9 = -1*2mod9 = 7mod9 so rem = -1.2 = -2 = 7

it can be represented by 9b + 7............(2)

equating (1) and (2)

17a+1=9b+7 => 9(b-a) = 8a - 6
this is true for a = 3

so remainder = 17*3 +1 = 52

Is this solution Helpfull? Yes (8) | No (2)  

SAI SARAN  (11 years ago)

is it 0 ???

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

smr  (11 years ago)

60
break 153 into 9 and 17 and den divide to find remaider..

Is this solution Helpfull? Yes (1) | No (19)  

Guru Pranav  (11 years ago)

It is 52 !!!

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