2. Questions Bank
  3. 10th Class
  4. Mental Ability
  5. Coding-Decoding

10th Class Mental Ability Coding-Decoding Question Bank Coding-Decoding

  • question_answer
    If \[2\Delta 3=8.5,4\Delta 9=42.5,\text{ }8\Delta 6=55,\] then \[18\Delta 37=?\]

    A)  61                               

    B)  93.5            

    C)  693.5                          

    D)  642

    Correct Answer: C

    Solution :

     \[2\Delta 3\Rightarrow (2\times 3)+\left( \frac{2+3}{2} \right)=8.5\] \[4\Delta 9\Rightarrow (4\times 9)+\left( \frac{4+9}{2} \right)=42.5\] \[8\Delta 6\Rightarrow (8\times 6)+\left( \frac{8+6}{2} \right)=55\] \[\therefore 18\Delta 37\Rightarrow \left( 18\times 37 \right)+\left( \frac{18+37}{2} \right)=693.5.\]


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