1.

Which of the following numbers is not an irrational number?(a) π(b) \(\frac {22}{7}\)(c) 1.5353353335….(d) 2.7878878887….This question was posed to me in exam.My question is based upon Irrational and Rational Numbers in portion Real Numbers of Mathematics – Class 10

Answer»

The correct option is (b) \(\frac {22}{7}\)

For explanation: An irrational NUMBER is expressible in the decimal FORM as non-terminating and non-REPEATING decimals.

From the GIVEN OPTIONS,

π, 1.5353353335…, 2.7878878887… are non-terminating and non-repeating decimal.

Whereas, \(\frac {22}{7}\) is non-terminating but repeating decimal.



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