$5 NLHE: $$5 NLHE: Help me count outs on this flop

[thepogues]

$5 NL HE: $$5 NL HE: Help me count outs on this flop

ME: 8s 9s

HIM: Ah Qc

FLOP: 6h 7s Js

I count 15, but when I run the hand at cardplayer.com it says I'm 68.9% to win the hand. I only count the straight outs as 6 and the flush outs as 9 equals 15. Which in my simple in my head math gives me about 60%. They must count 8 outs for the straight and 9 for the flush this equals 17 and I calculate this (in my head) to 68%

My question. Is it safe to count the same card twice as the clearly do at cardplayer.com

Please share some logical thoughts or opinons

Peace!

 

[c9h13no3]

An eight or nine also gives you the best hand...

 

[Jillychemung]

9 Spades
3 Non-spade Fives
3 Non-spade Tens
3 Eights
3 Nines
==============
21 cards

But you have to subtract out the non-spade combos where you get counterfeited like KxTx, Ax8x, Qx9x etc.