Skip to content
Philoid
Browse Saved
Back to chapter
Mathematics
1. Number Systems
Home · Class 9 · Mathematics · NCERT Mathematics Exemplar · 1. Number Systems
Prev
Next
Q4 of 96 Page 6

Classify the following numbers as rational or irrational with justification:

1.010010001…

The given number is irrational number.

Justification: Since 1.010010001 is non - terminating non - recurring decimal number, therefore it cannot be written in the form p/q; q≠0, p, q both are integers.


Thus, 1.010010001 is irrational.


More from this chapter

All 96 →
4

Classify the following numbers as rational or irrational with justification:

(1 + √5) − (4 + √5)

4

Classify the following numbers as rational or irrational with justification:

10.124124…

1

Find which of the variables x, y, z and u represent rational numbers and which irrational numbers:

(i) x2 = 5 (ii) y2 = 9


(iii) z2 = .04 (iv) 2

Find three rational numbers between

(i) –1 and –2 (ii) 0.1 and 0.11


(iii) (iv)

Questions · 96
1. Number Systems
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 2 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 1 2 3 4 5 6 6 6 6 7 7 7 7 7 7 7 7 8 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 11 11 11 11 12 13 14 14 14 14 14 14 14 1 2 3 4 5 6 7
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved