Does rolling a six-sided die $40$40 times describe a Bernoulli sequence?
Yes
No
Does rolling a six-sided die $30$30 times and keeping track of the number of times the die lands on $2$2 describe a Bernoulli sequence?
Does "select $50$50 random people from the population and record whether or not they are over $30$30 years old" describe a Bernoulli sequence?
A particular coin is more likely to land on heads than tails. Does tossing this coin $20$20 times and recording the number of times it lands on heads describe a Bernoulli sequence?