CBSE › Class 9 › Maths › The World of Numbers (Class 9 NCERT New)
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1. π−2\pi-2π−2 is

2. Decimal expansion of a Rational Number is

3. Identify this famous mathematician who discovered the numbers which were not rationals (i.e. irrational numbers), around 400 BC.

4. 1.27272727....... can be expressed in p/q form as

5. Rational number follow closure property under division.

6. Find the value of x, if 3(x−10)= 273^{\left(x-10\right)}=\ 273(x−10)= 27

7. Solve: 1315×71513^{\frac{1}{5}}\times7^{\frac{1}{5}}1351​×751​

8. A rational number between √2 and √3:

9. 4√5 + 5√5 is equal to:

10. √12 X √15 is equal to:

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