समुच्चय {0,3,1,2,1,3,0,2,2,4,4} को संक्षिप्त रूप में लिखिए ।

Four coins were tossed 36 times simultaneously. Each time the numbe r of heads appearing was noted down as below: 2, 3, 0, 0, 1, 4, 3, 3, 2, 4, 0, 1, 3, 2, 4, 2, 3, 1, 2, 0, 4, 3, 2, 0, 1, 2, 3, 3, 2, 2, 4, 4, 0, 1, 1, 3. What are the frequencies of 0 and 4 number of heads respectively?

Find the mode of 1, 0, 2, 1, 0, 2, 3, 1, 3, 1, 0, 4, 2, 4, 1 and 2.