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1.                 DE:BC= ………
               A. 1:2    B. 1:3
               C. 2:3    C. 3:4
               E. 3:2
   

20.x2=………..
A. 43 B. 45
C. 85 D. 93
E. 80

1. x=………
   A. 20 B.30
   C.35 d. 40
   E. 50
2. 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.1/8 B.1/3 C.2/3 D.5/6 E. None of these
3. A bag contains 12 white balls and some red balls. The probability of drawing a red ball is 5/11.
   The number of red balls is
   A.10 B.12 C.22 D.5 E. None of these
4. A letter is chosen from the letters of the word “ MATHEMATICS”. The probability that it
   will be a vowel is
   A.4/9 B.4/11 C.5/9 D.5/11 E.7/11