Type 1 – Something You Know: includes passwords, PINs, combinations, code words, or secret handshakes. Anything that you can remember and then type, say, do, perform, or otherwise recall when needed falls into this category.
Type 2 – Something You Have – includes all items that are physical objects, such as keys, phones, smart cards and USB drives devices
Type 3 – Something you are: includes any part of the human body that can be offered for verification, such as fingerprints, palm scanning, facial recognition, retina scans, iris scans, and voice verification.
Answer: 50 Explanation: let amit's current age = a and armaan's current age be b. (a-5) = 3* (b-5) i.e. a= 3b-10 -(i) 10 years later, (a+10) = 2(b+10) i.e. a=2b+10 -(ii) From eqn (i) and (ii), b=20, and a=50
