Aditya Gupta
Last Activity: 4 Years ago
dear student, both the answers given by vikas and saurabh are ABSOLUTELY WRONG and hence you shouldnt give any attention to their crappy excuses of using fermat theorem, to hell with fermat and his theorem!!
CORRECT SOLUTION:
we know the identity
a^(2n+1) + b^(2n+1)= (a+b)(a^2n*b^0 – a^(2n-1)*b^1 + a^(2n-2)*b^2 – ,,,,,,,, – a^1*b^(2n-1) + b^2n), where n is a natural no
simply substitute a=13 and b= 11 and n= 70, we get
(13^141) +(11^141)= (11+13)(13^140 – …... + 11^140)
= 24*k where k= (13^140 – …... + 11^140) is an integer
hence, (13^141) +(11^141) is clearly divisible by 24.
so the remainder is zero.
KINDLY APPROVE :))