Question

Consider a two dimensional array A[20][10]. Assume 4 words per memory cell, the base address of array A is 100, elements are stored in row-major order and first element is A[0][0].What is the address of A[11][5]?

• A. 575
• B. 560
• C. 570
• D. 460

Answer 1

The correct option is B 560

Element A[11][0] is stored at
“Base Address $+11\ast 10\ast 4$"
which is
"Base Address + 440" = 540.
So, A[11][5] is stored at
$540+5\ast 4=560$.