GuntisAndersons
GuntisAndersons
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April 25th, 2019 at 12:53:20 PM permalink
Roulete with 37 numbers in total! If I keep betting on same number again and again, what are my chances to not hit it in 100, 150, 200 and 250 spins?
OnceDear
OnceDear
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GuntisAndersons
April 25th, 2019 at 1:06:57 PM permalink
Quote: GuntisAndersons

Roulete with 37 numbers in total! If I keep betting on same number again and again, what are my chances to not hit it in 100, 150, 200 and 250 spins?



Hi, and welcome to the forum.

a) (36/37)^100 = 6.457697 %
b) (36/37)^150 = 1.64103 %
c) (36/37)^200 = 0.4170185 %
d) (36/37)^250 = 0.1059727 %

It wouldn't make any difference if you kept betting on different numbers.
Psalm 25:16 Turn to me and be gracious to me, for I am lonely and afflicted. Proverbs 18:2 A fool finds no satisfaction in trying to understand, for he would rather express his own opinion.
7craps
7craps
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April 25th, 2019 at 2:35:09 PM permalink
Quote: GuntisAndersons

what are my chances to not hit it in 100, 150, 200 and 250 spins?

agree and add this
a) (36/37)^100 = about 1 in 16
b) (36/37)^150 = about 1 in 61
c) (36/37)^200 = about 1 in 240
d) (36/37)^250 = about 1 in 944

all these values are BEFORE one spin has happened.
once a spin or spins have happened the probability has changed.

take a) say 99 spins and NO # hit.
a) (36/37)^100 = about 1 in 16
the probability the next spin does hit is 1 in 37,
does NOT hit = 36/37 or about 97.3%
winsome johnny (not Win some johnny)
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