Raman asked Vinay to convert 1216 into a percentage. He answered 75%. True/False?
True
False
Percentage = 1216×100 = 75% So, his answer is right.
In an examination, 20 questions of true-false typer are asked. Suppose a students tosses a fair coin to determine his answer to each question. If the coin falls heads, he answer true, if it falls tails, he answer false. Find the probability that he answers atleast 12 questions correctly,