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

Evaluate {:|( 102,18,36),( 1,3,4),( 17,3,6)|:}

|(11,12,13),(12, 13, 14),(13, 14, 15)|=

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

The odd numbers are divides as follows : {:(,,1,3,,),(,5,7,9,11,),(13,15,17,19,21,23):} "…………………………………………………….." then the sum of nth row is :

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.

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. (i) {(2,1),(5,1),(8,1),(11,1),(14,1),(17,1)} (ii) {(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)} (iii) {(1,3),(1,5),(2,5)}

The distance (in km) of 40 engineers from their residence to their place of work were found as follows : {:(5,3,10,20,25,11,13,7,12,31),(19,10,12,17,18,11,32,17,16,2),(7,9,7,8,3,5,12,15,18,3),(12,14,2,9,6,15,15,7,6,12):} Construct a grouped frequency distribution table with class size for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation ?

Find the mean deviation about the median for the data in 13, 17, 16, 14, 11, 13, 10, 16, 11, 18, 12, 17

Consider the pattern shown below: {:(" Row ",1,1,,,),(" Row ",2,3,5,,),(" Row ",3,7,9,11,),(" Row ",4,13,15,17,19):}etc. The number at the end of row 60 is