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Recent questions tagged counting-figure

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GATE Civil 2023 Set 2 | GA Question: 3
In how many ways can cells in a $3 \times 3 $ grid be shaded, such that each row and each column have exactly one shaded cell? An example of one valid shading is shown. $2$9$3$6$
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GATE ECE 2022 | GA Question: 4
The figure shows a grid formed by a collection of unit squares. The unshaded unit square in the grid represents a hole.What is the maximum number of squares without ... \times 4$ grid using the unit squares as building blocks?$15$20$21$26$
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