Ex 9.1 Q 14 , 15 and 16

What is the sum of the numbers 13, 14, 15 and 16?

The mode of given data 15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17 and 15 is

Three prisms 1, 2 and 3 have the prism angle A = 60^(@) , but their refractive indices are respectively 1.4, 1.5 and 1.6. If delta_(1), delta_(2), delta_(3) be their respective angles of deviation then

Write each of the following sets in set- builder form : A = { 4,6, 8 , 9, 10 , 12, 14, 15, 16, 18}

What are those elements which belong to Groups 1,2, 13, 14, 15, 16, 17.

The ages of 15 students in years) in a summer camp are as follows: 11, 14, 13, 15, 16, 10, 12, 12, 14, 11, 10, 12, 13, 15, 11 Find: the range of age.

The ages of 15 students (in years) in a summer camp are as follows: 11, 14, 13, 15, 16, 10, 12, 12, 14, 11, 10, 12, 13, 15, 11 Find: the minimum age.

The ages of 15 students (in years) in a summer camp are as follows: 11, 14, 13, 15, 16, 10, 12, 12, 14, 11, 10, 12, 13, 15, 11 Find: the maximum age.

The ages of 15 students in years) in a summer camp are as follows: 11, 14, 13, 15, 16, 10, 12, 12, 14, 11, 10, 12, 13, 15, 11 Find: The mean age.

If A = {3, 6, 9, 12 , 15 , 18 , 21} , B = { 4, 8, 12 ,16 , 20 } , C = { 2, 4, 6, 8, 10 , 12 , 14 , 16 } , D = {5, 10 , 15 , 20 } ; find(i) A - B (ii) A - C (iii) A - D