Question

9th standard excersize 1.3 question no 9
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Answer 1

Answer:

Note: A rational number has terminating and non terminating decimal expansion. Whereas irrational number has non terminating non repeating decimal expansion.

Step-by-step explanation:

Question no 1, root 23 is an irrational number.

Question no 2, root 225 is a rational number as root 225 is 15.

Question no 3, 0.3796 has a terminating decimal expansion therefore it is a rational number.

Question no 4, 7.478478 has a non terminating repeating decimal expansion,therefore it is also a rational number.

Question no 5, 1.101001000100001 has a non terminating non repeating decimal expansion . Therefore it is an irrational number.

Answer 2

Answer:

Question no 1, root 23 is an irrational number.

Question no 2, root 225 is a rational number as root 225 is 15.

Question no 3, 0.3796 has a terminating decimal expansion therefore it is a rational number.

Question no 4, 7.478478 has a non terminating repeating decimal expansion,therefore it is also a rational number.

Question no 5, 1.101001000100001 has a non terminating non repeating decimal expansion . Therefore it is an irrational number.