Easy question

[joker122]

What are the odds of an overcard flopping to KK, QQ, JJ, TT, and 99 respectively?

[sthief09]

The odds of flopping no overcards, and no 3-flush (3-flush for AA-QQ is ok if you have the card of that suit)

AA- 86%
KK- 65.89%
QQ- 49.18%
JJ- 34.17%
TT- 24.16%
99- 16%

http://pokerpages.com/articles/archives/samuel22.htm