Raman asked Vinay to convert 1216 into a percentage. He answered 75%. Was his answer true or false?
True
False
x % of y is, x100×y 1216 in percentage is, 1216×100=75%
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,