Cet eng

E. 2

1. Given data 2,3,4,4,4,5,5,6,7,13 . Which of the following is (are) true?
   1.The mean is equal to the median.

   1. The mode is smaller than the mean.
   2. The mode is greater than the median.
      A.one only B. 2 only C.3 only D. 1 and 2 only E.2 and 3 only
      19.If the mode of even numbers 2,4,4,3,7,5,y,5,4,3,5 is 5. Find the mean of the set of number.
      A. 3 B. 3.5 C.4 D.4.5 E.5
      20.A group of n numbers has mean m if the number 1,2 and 9 are removed from group , the
      mean of remain n-3 number remains unchanged . Find m.
      A.1 B.2 C. 3 D.4 E.n-3
      21.A two figure number is written down at random, the probability that the number is greater
      than 67 is
      A. 3299 B.3290 C.3399 D.3390 E. None of them

2. The probability that a number chosen from 2,4,5,6,6,7,8,9 will be the median is
   A.12 B.13 C.14 D.0 E.18

3. A dice is rolled , the probability that it is not greater than 3 is
   A.16 B.26 C.36 D.46 E.56

4. A bag contains 5 white marbles, 3 black and 2 red. The probability that if a marble is chosen
   at random it will be a not white is
   A. 35 B.25 C.310 D.210 E.12

5. A bag contain 12 white balls , some red balls and some blue balls. The probability of
   drawing a red ball is 12 and the probability of drawing a blue ball is 13 . The total number
   of balls in the bag is
   A. 22 B.60 C. 72 D.84 E. impossible to determine from the given information

6. A bag contains x red balls and 2 blues. A ball is chosen at random, given that the
   probability that it will be red is 23 , then x=………
   A.1 B.2 C.3 D.4 E.5

7. The probability of an event A is 3-4x . Then x cannot be
   A. 12 B.14 C.34 D.58 E.35

8. Which of the following numbers cannot be probability value?
   A. 0 B. 1 C. 0.99 D.9.9 E.15

9. If any number is chosen at random from the whole number 1 to 50 inclusive , the probability
   of getting a multiple of 3 is
   A.448 B.1648 C.450 D.1650 E.1250

10. The probability that a number chosen at random from the numbers 6,8,8,12,12,8,14 will be
    the mode of these number is
    A.14 B. 38 C. 13 D. 18 E.23

11. A bag contains 12 marbles, six are red, four are blue and two are white. If one marble is
    drawn from the bag, then the probability that is neither white nor blue is
    A.16 B.118 C.0.5 D.2 E.1

12. A and B are two sets such that n(A) = 10, n(B)= 25 and n(A∪B) =30, where n(P) is the
    number of elements in the set P. If an element is chosen at random from the set A∪B, the
    Probability that will not be an element of B\A is
    A.18 B.13 C.23 D.56 E. None of these

13. A bag contains 12 white balls and some red balls. The prob