Consider the following statements: 1. If f is the subset of Z × Z defined by f = {(xy, x−y); x, y ∈ Z} , then f is a function from Z to Z. 2. If f is the subset of N × N defined by f = {(xy, x+y); x, y ∈ N} , then f is a function from N to N. Which of the statements given above is/are correct?

For election to the Lok Sabha, a nomination paper can be filed by

Miscellaneous · Easy

In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a

Miscellaneous · Easy

Which among the following events happened earliest ?

Miscellaneous · Easy

An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?

Miscellaneous · Easy