)
,
.
numebr on his list? Write its last two digits as your answer.
grid of square tiles. Robert chooses four of these squares uniformly at random. The probability that the centers of these four squares form a square themselves is 
where 
are coprime naturals. Write the largest 
digit odd factor of 
.
Y by
The side lengths 
of a triangle 
are positive integers. Let
for any positive integer 
.
If
and 
, determine all possible perimeters of the triangle .
of a triangle 
are positive integers. Let
for any positive integer 
.If
and 
, determine all possible perimeters of the triangle .
