it's not a trick question, but most people get the wrong answer......
2007-01-21 06:36:16 · 5 answers · asked by Dudeberry 2 in Science & Mathematics ➔ Mathematics
9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
= 20
(unless you want to add in the decimal point, that will be uncountable)
2007-01-21 06:41:53 · answer #1 · answered by wind_liao 2 · 0⤊ 0⤋
there will be twenty 9s.
the are nine 9s for 9 19 29 39 49 59 69 79 89 and eleven 9s for 90 91 92 93 94 95 96 97 98 99
2007-01-21 06:44:23 · answer #2 · answered by wormhole 2 · 0⤊ 0⤋
20
2007-01-21 06:43:24 · answer #3 · answered by the_emrod 7 · 0⤊ 0⤋
Twenty. 10 for the nineties range, plus numbers ending in 9. (99 counts for two.)
2007-01-21 06:45:32 · answer #4 · answered by John T 6 · 0⤊ 0⤋
20, ones listed above and the ninties 90,-98
2007-01-21 06:44:04 · answer #5 · answered by Outside the box 6 · 0⤊ 0⤋