Capital English alphabet has 11 symmetric letters that appear same when looked at in a
mirror. These letters are A, H, I, M, O, T, U, V, W, X and Y. How many symmetric three
letters passwords can be formed using these letters ?
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ANSWER :
121 symmetric passwords could be formed .
SOME PASSWORDS :
MOM
YAY
HAH
AHA
HIH
IHI
AIA
IAI
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