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Maths Puzzle
Numerical Ability
Algebra
find remainder when 7777.777...(upto 101 digits) is divided by 440
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- Answer is 29777........(7 digit up to 102 digits)
7777777.......upto 105 digits = 17*4400000000....(up to 104 digits)
+ 29777..........(up to 104 digits) - 10 years agoHelpfull: Yes(2) No(1)
- ans is 337.
77777,77777.....(upto 101 digits can be written as below)
==>700000...(zeros up to 101)+7000...(0 s upto 100)+700....(0 s upto 99)..+700+77+7
for every number such that start with 7 and have three or more zeros remainder will be 400 when divide by 440, for example
7000000%440=400,7000%440=400,70000%440=400,ans so on
so reaminder will be (99*400+777)%440=40377
===>40377%440=337 - 10 years agoHelpfull: Yes(2) No(2)
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