A question paper consists of two sections having respectively, 3 and 5 questions. The following note is given on the paper "It is not necessary to attempt all the questions one question from each section is compulsory". In how many ways can a candidate select the questions? 

Here, we have two sections A and B (say), the section A has 3 questions and section B has 5 questions and one question from each section is compulsory, according to the given direction. 

$\therefore$ Number of ways selecting one or more than one question from section $A$ is $2^3-1=7$

and number of ways selecting one or more than one question from section $B$ is $2^5-1=31$

Hence, by the principle of multiplication, the required number of ways in which a candidate can select the questions

                                   $=7\times 31=217$