Which products are people most likely to be comfortable buying on the Internet?

A).  Books

B).  PCs

C).  CDs

D).  All of the above

 All of the above

The products that people are most likely to be more uncomfortable buying on the Internet are Books, PCs and CDs.

D

• In an alloy, zinc and copper are in the ratio 1 : 2. In the second alloy, the same elements are in the ratio 2 : 3. If these two alloys be mixed to form a new alloy in which two elements are in the ratio 5:8, the ratio of these two alloys in the new allow
• X and Y are two alloys which are prepared by mixing zinc and aluminium in the ratio of 1 : 4 and 11 : 8 respectively. If equal quantities of alloys are melted to form a third alloy Z then what is the ratio of zinc and aluminium in alloy Z?
• The sum of the reciprocals of the ages of two colleagues is five times the difference of the reciprocals of their ages. If the ratio of the products of their ages to the sum of their ages is 14.4 : 1, the age (in years) of one of the colleagues must
• Two people A and B start simultaneously from points P and Q towards Q and P respectively. After meeting for the first time, A and B take 8 hours and 18 hours respectively to reach their destination. If A travels at a speed of 96 kmph, find the speed of B.
• Suppose A is an abstract class, B is a concrete subclass of A, and both A and B have a default constructor. Which of the following is correct?1. A a = new A();2. A a = new B();3. B b = new A();4. B b = new B();