There are 3 columns of numbers.  Start 1 and C1, 2 at C2, 3 at C3, 4 at C3, 5 at C2, 6 at C1 and so on each time increase by 1 and snake its way down.

a. What number is in C3 R2019?

b. What cell number (C,R) is the number 2019 located?

c. Input is (m,n), find its value v.

d. Input is v, find (m, n) where m is column number and n is row number

c and d will give full marks (2/2)