1.

A set of 30 calculators would have cost 4'498.50₹ in the early 1990 how ever in 2010 ' 30 calculators could he purchased for 1057.50₹ how much less in the price of one calculators in 2010 than in 1990?

Answer»

Define a relation R on the SET N of natural numbers by
R = {(x, y) : y = x + 7, x is a natural number LESS than 4; x, y ∈N}. Write down the DOMAIN and the RANGE.



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