1. If  A be the area of a right triangle and x is one of the sides containing right angle .Prove that the length  of altitude on the hypotenuse is 2Ax / √(x^2 +4A^2).
  2. In a shop , lottery were sold and there are 5 prizes on these tickets .If  Sucharita has buy 1 ticket , then what is the probability of wining a prize ?
  3. In a shop , lottery were sold and there are 5 prizes on these tickets .If  Sucharita has buy 2 tickets , then what is the probability of wining a prize ?
  4.  Find the value of x , if the mode of the following data is 25.  15,20,25,18,14,15,25,15,18,16,20,25,20,x,18
  5. An army  contingent of 616 members is to march behind an army band of 32 members in a parade . THe two groups are to march in the same number of columns. What is the maximum number of the columns in which they can  march ? (HFC - wite statement in all the questions}
  6. A coin is tossed. If it shows head, we draw a ball from a bag consisting of 3 red balls and  4 black balls . If it shows tail,we throw a dice .What is the sample space of this experiment?What  are the favourable cases representing the events:                                                    (i) the throw of the coin resulted in a head                                                                        (ii) a red ball is drawn.

Asked by sucharitasahoo1 | 22nd Nov, 2017, 08:36: PM

Expert Answer:

begin mathsize 16px style From space the space given space observations space 15 comma space 18 comma space 20 space and space 25 space are space repeated space thrice.
According space to space the space question space mode space is space 25.
Hence comma space value space of space straight x space should space be space 25. end style

Answered by Sneha shidid | 29th Nov, 2017, 11:15: AM