5 is the ans...
GLITCH is an unwanted pulse that may occur in a circUIT
LET THE OUTPUT OF Q WILL BE SPECIFIC FOR SOME OF THE INPUTS OF A,B,C...
AND ONLY NOT GATE IS ABLE TO CHANGE THE BEHAVIOUR OF THE OTHER GATES....
HERE
1 .THE NOT GATE(FOR A INPUT) WILL CHANGE ITS BEHAVIOUR AND PROPAGATE THROUGH THE AND GATE TO PRODUCE OUTPUT IN (6+10)=16NS
2. AT THE SAME TIME OR GATE WILL GIVE ITS OUTPUT IN= 11 NS
SO GLITCH TIME=16-11=5NS
READ THIS :
http://sce2.umkc.edu/csee/hieberm/281_new/lectures/simplification/HazardsAndGlitches.html
CORRECT ME IF THERE IS ANY BATTER WAY TO ANSS