निम्नलिखित आंकड़ों से बहुलक ज्ञात करे :
5, 2, 4, 2, 7, 1, 7, 5, 5, 4, 6, 3, 5, 3, 4, 6, 5, 5,

In a 'tree plantation' project of a certain school there are 45 students of 'Harit Sena'.The record of trees planted by each student is given below:3, 5, 7, 6, 4, 3, 5, 4, 3, 5, 4, 7, 5, 3, 6, 6, 5, 3, 4, 5, 7,3, 5, 6, 4, 4, 3, 5, 6, 6, 4, 3, 5, 7, 3, 4, 5, 7, 6, 4, 3, 5, 4,4,7 Prepare frequency distribution table of the data.

Make a frequency distribution of the following series 1,1, 2, 3, 3, 3, 3, 3,3, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6,6, 6, 6, 6, 7, 7,7,8,8.

Make a frequency distribution of the following series. 1, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7.

The mode of 3,3,7,4,5,3,5,6,8,9,5,3,5,3,6,9,7 ,4 is

The mode of 3,3,7,4,5,3,5,6,8,9,5,3,5,3,6,9,7 ,4 is

{:(5,4,9,6),(7,5,2,4),(1,3,4,5),(35,60,72,?):}

If A = { 3 , 5 , 7 , 9 , 4 }, B = { 1, 3, 5 } , C = { 2, 4, 6 ,7 } ; then A - { B ∩ C } =