If today there are 8 people absent from a class of 17 people, what is the probability of attendance for tomorrow if the same students don't show up for class? Convert the fraction to a decimal. Round to three decimal places,

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).