Question 705020
SCQMEDIUM
An egg tray has 30 cavities to hold eggs in 5 rows and 6 columns. Each cavity is surrounded by 4 raised corners shared by adjacent cavities. How many raised corners does the egg tray have?
(A)
30
(B)
35
(C)
36
(D)
42
Detailed Solution
The grid of cavities is . The corners are the intersection points of the grid lines. Number of vertical grid lines = . Number of horizontal grid lines = . Total intersections (raised corners) = .
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