matng6

The mean of five numbers is 10 and the mean of two of them is 13. The mean of the
remaining three is
A. 7 B.8 C. 12 D.23 E.24

1. There are seven numbers arranged in row, whose mean is 11. The mean numbers of first four
   numbers is 8 and the last four number is 14. Then the median of the arrangement is
   A.9 B.10 C.11 D.12 E.13
2. Given that the class interval is 34-38. Which of the following is (are) true?
   1. The class limits of the interval are 34 and 38.
   2. The midpoint of the interval is 35.
   3. The lower class boundary is 33.5.
      A. 1 only B. 2 only C. 3 only D. 1 and 2 only E.1 and 3 only
3. The mean of the numbers a1,a2,a3,……..,a7 is 20, then the mean of the numbers
   a1+2, a2+4,a3+6,………,a7+14 is
   A. 19 B.20.9 C. 24 D. 20 E.28
4. The product of the median and the mode of the numbers 1,4,4,4,5,5,9,16 is
   A. 96 B.30 C.24 D. 20 E.18
   12.Seven values 3,3,3,4,5,8 and x . If the mean of these seven values is equal to twice their
   mode , then x=………
   13.The mean of the numbers log⁡2,log⁡〖3/2〗 ,log⁡〖4/3〗 ,….,log⁡〖100/99〗 is
   A.log⁡〖50/49〗 B.log⁡〖51/50〗 C. 0.01 D.0.02 E.2/99
5. The mean of 3,7,x,11-x, x-1 is 5, then the value of x is
   A.3 B.4 C. 5 D. 5.5 E.7.5
6. If the average of three numbers a,b,c is x , then the average of a+3, b-1, c-5 is
   A. x B. x+1 C.x-1 D. 3x-1 E.x+2
   The pendulum on a clock swings through an angle of 2 radians, and the tip sweeps out and
   arc of 6 inches. Then the length of the pendulum is
   A. 3 inches B. 12 inches C. 24 inches D. 12/π inches E. 24/π inches
7. The area of a sector of a circle is 143 cm2and the length of the arc of the sector is 11 cm .
   Then the radius , in cm, of the circle is
   A. 11 B.13/2 C.26 D. 13 E. None of these
8. The figure shows a sector OMN of a circle at centre O with the radius r = 6 cm and a
   perimeter of 16 cm . The area of sector MON = ………
   A. 24〖cm〗^2 B. 36〖cm〗^2 C. 15〖cm〗^2 D.12〖cm〗^2 E. 9〖cm〗^2