G9matn mothtest

mean is
A. 3 B. 9 C. 27 D. 81 E. x

1. The mean height of 6 boys is 4´2´´ . The mean height ot 4 girls is 3´9´´ .The mean height of
   combined 6 boys and 4 girls is
   A.4´1´´ B.4´ C. 3´11´´ D.3´10´´ E. 41/2´
2. For the sample 5,6,5,7,8,5,6,7,6,5 which of the following is (are) true?
   1. The median is 6 2. the mean is 6 3. the mode is 5.
      A. 1 only B.2 only C. 3 only D. 1 and 3 only E. 1 , 2 and 3
3. For the sample 9,8,10,9,11,9,12,12 which of the following is (are)
   A.log⁡〖(xy) 〗=log⁡x + log⁡y B. (log⁡x )^n = n log⁡x C. log_10⁡1=0
   D.log_x⁡x=1 E.log⁡(x/y)= log⁡x-log⁡y
4. Which of the following is (are) true?
   1.log⁡M/log⁡N =log⁡M-log⁡N 2.log⁡∛M=3 log⁡M 3.log_√a⁡M =2log_a⁡M
   A. 1 only B. 2 only C. 3 only D. 1 and only E. None of them
   6.Which of the following is (are) true?