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number
by rudrendra Kashyap - Saturday, 30 August 2014, 10:27 AM
  If (666 ... n digits)2 + (888 .... n digits) = Y, where n > 1, then find the hundred’s digit in Y
a)2
b)4
c)3
d)0
Re: number
by arihant kothari - Saturday, 30 August 2014, 01:11 PM
  It has to be 2.
Re: number
by rudrendra Kashyap - Sunday, 31 August 2014, 09:14 AM
  ans is 4
Re: number
by rudrendra Kashyap - Sunday, 31 August 2014, 09:17 AM
  6666....n times ^2 + 8888....n times
=36(1111....n times)^2 + 8888....n times
36(....4321) + 88888....n times
(....556)+8888.....n times
so ans is 4