In the set of the natural numbers, there is a number which does not have its predecessor. What is that number?
The natural numbers start with 1. So 1 does not have any predecessor which lie under the natural numbers.
Find the negation of the statement - 'There exists a rational number x such that its square is 2 '.
There is a set of 7 natural numbers namely: 1, 2, 3, 4, 5, 6, 7. Another set of natural number are :1, 2, 3, 4, 5, 6. What are the values of medians in each set of numbers respectively?