`13:36::15:`

Find the mean of the following data: x : 19 21 23 25 27 29 31 f : 13 15 16 18 16 15 13

A coin is tossed if head turns up then pair of dice is thrown and sum of numbers is noted.If tail turns up then a card numbered from 1 to 9 is drawn and number is noted,then find the probability that number is 7 or 8. (a) (13)/(36) (b) (15)/(72) (c) (19)/(72) (d) (11)/(36)

In the data 18, 13, 15, 13, 18, 14, 15, 13, 14, 15, how many times the number '15' repeats itself?

If the mode of the scores 10, 12, 13, 15, 15, 13, 12, 10, x is 15, then what is the value of x?

the value of log_(3)11log_(11)13log_(13)15log_(15)27log_(27)81

Using the properties of detminants, evalulate. (i) |{:(,23,6,11),(,36,5,26),(,63,13,37):}| (ii) |{:(,sqrt13+sqrt3,2sqrt5,sqrt5),(,sqrt15+sqrt26,5,sqrt10),(,3+sqrt65,sqrt15,5):}|

Choose the correct alternative that Will complete the series. 13 (168) 13, 14 (181) 13, 15 (?) 13

If 19 (36) 13 and 37 (81) 28 then what is the value of 'A' in 43 (A) 38 ?

If (x+y)=13 and xy=36 , then the value of (x^(3)+y^(3)) is :