Questions

By asking this the interviewer wants to know that do you have any touch with ECG or not.

Sample Answer :

ECG is nothing but a Electrocardiogram. Yes, i performed ECG test to some patients when i worked as an intern at a named cardiologist.

ECG procedure, or an ECG scan, an ECG test measures the electrical activity of the heart to ensure that it is functioning properly. To perform an electrocardiogram an ECG monitor is required. An ECG monitor, device or machine is required to perform an electrocardiogram and provide insight into whether your heart is working normally or not.

Here the puzzle follows the logic that

Right side number = sum of the number on the left side and the previous number on the left side

=> 6 = 4+2

=> 10 = 6+4

=> ? = 16+10 = 26.