Questions

Later in 1840, Rowland Hill invented the stamp, which was paid for by the sender, not the receiver.

It is useful to have a property of a material that is independent of the size of the sample and can be use to compare its elastic properties with another - this is called the Modulus of Elasticity for the material.

The modulus of elasticity is defined as:

Modulus of elasticity = Stress / Strain

There are three types of moduli. They are :

(a) the Young Modulus - tensile and compression longitudinal stress

(b) the shear modulus - a shearing stress

(c) the bulk modulus - volume changes of the specimen.

Continuously rendered services are those services, which are prepared and provided only to the customers who are physically present. This kind of service is not finished in instant time; it is a process, which is extended to a time limit. It is a kind of face-to-face interaction. For example reservation service, restaurant service, massage, etc.

Bootstrapping is a term used in business to refer to the process of using only existing resources, such as personal savings, personal computing equipment, and garage space, to start and grow a company.

Do the math and you will see that this puzzle is based on the fact taht (2)=1 and 1+1=2