2. Sample Papers
  3. SSC

SSC Sample Paper Mock Test-20 SSC CGL Tear-II Paper-1

  • question_answer
    The average of 20 numbers is 12. The average of the first 12 numbers is 11 and that of the next 7 numbers is 10. The last number is

    A) 40

    B)  38

    C)  48       

    D)  50

    Correct Answer: B

    Solution :

    Last number = Sum of 20 numbers \[-\] Sum of first 12 numbers \[-\] Sum of next 7 numbers \[=20\times 12-11\times 12-7\times 10\] \[=240-132-70=38\]


You need to login to perform this action.
You will be redirected in 3 sec spinner