In a classroom when the students sit
2 per bench, 11 students are left with
no sits. And when they sit 3 per bench
7 benches are left empty. Determine the number
of students in this classroom.
A four_digit whole number
is interesting if the number
formed by the leftmost two
digits is twice as large as the
number formed by the
rightmost two digits.
(for example 2010 is interesting)
1 find the largest whole number
B such that all interesting
numbers are divisible by B
2 find the smallest whole
number D such that D is
divisible by all interesting
numbers.