Student in your class answered a matching question as follows. Evaluate the answer and make correction if necessary.

To a question, a student answered that bakelite is the thermosetting polymer. IS he answer correct?

Using the figure answer the following questions Find vec(AD)

In an examination 20 question of true false type are asked suppose a student tosses a fair coin to determine his answer to each question if the coins falls heads he answers true if it falls tail he answers false find the probability thet he answers at least 12 question correctly.

Study the graph and answer the following questions. What is represented by the graph ?

Match the following.Justify your answer