class 9 maths ch 1 mcq
The periodicity of 4627.428571, is :
1. 4
2. 10
3. 6
4. 19
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The period in 690.384615, is :
1. 384615
2. 690
3. 690384615
4. 6
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The set of numbers that possess the property of density, is :
1. Z
2. Q
3. R
4. 2 and 3
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The number whose multiplicative inverse is itself, is :
1. 0
2. 1
3. any rational number
4. None of these
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