EDPT Spatial Reasoning and Patterns 4

Question 1

In a number-pattern grid, each cell equals the sum of the cell directly above it and the cell to its left. The top row is 1, 2, 3 and the leftmost column is 1, 4, 7. What is the value in row 3, column 3?

Accepted Answer

13

Answer

Row 2 col 2 = 4+2=6; row 2 col 3 = 6+3=9; row 3 col 2 = 7+6=13; row 3 col 3 = 13+9=22. Recalculating with rule cell=above+left: r2c2=r1c2+r2c1=2+4=6, r2c3=r1c3+r2c2=3+6=9, r3c2=r2c2+r3c1=6+7=13, r3c3=r2c3+r3c2=9+13=22.

Question 2

A shape is rotated 45° clockwise six times in a row. What is the net rotation from its original position?

Accepted Answer

270°

Answer

6 × 45° = 270° clockwise total rotation.

Question 3

A pattern of tiles alternates between black and white in a checkerboard. A 4×4 board starts with a black tile in the top-left. How many black tiles are on the board?

Accepted Answer

8

Answer

A 4×4 checkerboard has 16 tiles; exactly half (8) are black when starting with black in a corner.

Question 4

An analog clock shows 3:45. If you look at the clock reflected in a mirror, what time does the reflection appear to show?

Accepted Answer

8:15

Answer

Reflecting a clock face swaps left and right; 3:45 becomes 8:15 in a mirror image.

Question 5

In a visual matrix, each row has three figures. The third figure is always formed by overlapping the first two and removing any shared region. Which rule does this apply?

Accepted Answer

Intersection removal (XOR)

Answer

Keeping only the non-overlapping portions while removing shared regions is the XOR (exclusive OR) operation.

EDPT - Electronic Data Processing Test Practice Test

EDPT - Electronic Data Processing Test Practice Test

EDPT Spatial Reasoning and Patterns 4