Q6 of 47 Page 140

How many rational numbers are there strictly between 0 to 1 such that the denominator of the rational number is 80?

The rational numbers between 0 and 1 are in the form of having denominator as 80.


Value of ranges from 1 to 79. The rational numbers are


So there are 79 rational numbers lies between 0 and 1 having denominator as 80.


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How many positive rational numbers less than 1 are there such that the sum of the numerator and denominator does not exceed 10?

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How many rational numbers are there strictly between 0 to 1 with the property that the sum of the numerator and denominator is 70?

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Fill in the blanks:

(a) The number 0 is not in the set of _________ .


(b) The least number in the set of all whole numbers is __________.


(c) The least number in the set of all even natural numbers is _________.


(d) The successor of 8 in the set of all natural numbers is ____________.


(e) The sum of two odd integers is _____________.


(f) The product of two odd integers is _____________.