Evaluate `|{:(13,16,19),(14,17,20),(15,18,21):}|`.

Find the values of the following determinants |{:(13,15,17),(14,16,18),(15,17,19):}|

Evaluate C(19,17)+ C(19,18)

Find the median of the data: 17,16,12,14,14,16,17,22,15,17,16,18

Evaluate .^19C_18+^19C_17

Calculate the mean deviation from the mean for the following data:13,17,16,14,11,13,10,16,11,18,12,17

Find the mode and median of the data: 13, 16, 12, 14, 19, 12, 14, 13, 14

Find the mode of the following data: 25,16,19,48,19,20,34,15,19,20,21,24,19,16,22,16,18,20,16,19

A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability distribution of the random variable X? Find mean, variance and standard deviation of X.

A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability distribution of the random variable X? Find mean, variance and standard deviation of X.

Find the mean deviation about the mean for the following data :12, 3, 18, 17, 4, 9, 17, 19, 20, 15, 8, 17, 2, 3, 16, 11, 3, 1, 0, 5