TCS Company Numerical Ability Permutation and Combination

A 3 3 grid is colored using red and blue
colors such that if we rotate the grid about
its center in the plane by 180 degrees, the
grid looks the same. The number of ways

Read Solution (Total 2)

Ans : 32
1 2 3
4 5 6
7 8 9
after 180 degree rotation
9 8 7
6 5 4
3 2 1

1 -----> 9 = 2 ways
2 -----> 8 = 2 ways
3 -----> 7 = 2 ways
4 -----> 6 = 2 ways
5 -----> 5 = 2 ways

2*2*2*2*2 = 32 ways
4 years agoHelpfull: Yes(2) No(1)

Each Gird can place to one to another and same corner represented in the same color: Possibility is 2X2X2X2X2=32
4 years agoHelpfull: Yes(0) No(0)

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