In most cases, yes, blackjack offers the best odds in a casino. This is largely because there are three outcomes here: a win, a loss, and a tie (push). Since the odds of a push rest at 8.48% and the chances of losing come in at 49.10%, the probability of winning a game of blackjack is high at 42.22%.

In reality, yes, plenty of people have earned their livelihood playing blackjack -- for the past 50-plus years. But it's not like they walk into the casino withR$1,000 and walk out withR$2,000 every day. Card counting provides a small edge over the house, typically 1%-2%.

It is generally considered proper to button the middle button of a three-button blazer, and to leave the bottom button unbuttoned. For a two-button blazer, it is customary to button the top button only.

Yes, it is customary to unbutton your suit jacket when sitting down. Leaving the jacket buttoned while seated can lead to unsightly creases and restrict your range of motion. However, if you are wearing a waistcoat or vest, it is typically left buttoned, as it is designed to provide a structured look even when sitting.