I'm EE signal processing background. This is technical interview. Didn't go well. I can feel it when lady with strong indian accent said "ok...". Found "match not ideal at this time" only 15 min after interview. Some of questions are posted here before. Some are not: 1. You see a person riding a bike. why do you feel the wheel is spinning backwards? 2. impulse response h[n]=[1 2 3 5 10]. input signal frequency = 100Hz, what is the output frequency? 3. they actually ask you to calculate a cross product... a = i+2j+k, b=j+2k. find the unit vector which is vertical to both a and b. 4. piecewise function f(x) = 2-x if x<-1, f(x) =x if x>=-1. Does lim(x->-1) exist? 5. matrix A is 3 by 3, B is 4 by 3. ask how to concatenate A and B in MATLAB 6. exit condition of recursive function 7. give some techniques to detect duplicate elements in an array and then remove them. Wish you guys good luck!