To flip a coin for head/tails the odds are 50-50 for it to be either heads or tails-correct? What are the odds of the flip turning up either heads or tails 2 times in a row?--- 3 times in a row?--- 4 times in a row?....5 times in a row? and on and on and on. Is there a formula used to calculate the odds on multiple back to back to back hits on the same heads/tails? Thanks in advance for any info-help?