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प्रश्न
The numerical expression `3/8 + ((-5))/7 = (-19)/56` shows that ______
विकल्प
rational numbers are closed under addition.
rational numbers are not closed under addition.
rational numbers are closed under multiplication.
addition of rational numbers is not commutative.
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उत्तर
The numerical expression `3/8 + ((-5))/7 = (-19)/56` shows that rational numbers are closed under addition.
Explanation:
Rational numbers are closed under addition means the sum of two rational numbers is also a rational number.
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संबंधित प्रश्न
Add the following rational numbers.
Evaluate each of the following:
Simplify:
Simplify:
Fill in the blanks:
(17 × 12)−1 = 17−1 × .....
Write the following rational number in `p/q` form.
`15.bar89`
Write down a rational number numerator (-5) x (-4) and denominator (28 – 27) x (8 – 5).
Insert a rational number between:
`(2)/(5) and (3)/(4)`
Arrange the following rational numbers in ascending order.
`(4)/(5),(6)/(7) and (7)/(10)`
The average life expectancies of males for several states are shown in the table. Express each decimal in the form `p/q` and arrange the states from the least to the greatest male life expectancy. State-wise data are included below; more indicators can be found in the “FACTFILE” section on the homepage for each state.
| State | Male | `bb(p/q)` form | Lowest terms |
| Andhra Pradesh | 61.6 | ||
| Assam | 57.1 | ||
| Bihar | 60.7 | ||
| Gujarat | 61.9 | ||
| Haryana | 64.1 | ||
| Himachal Pradesh | 65.1 | ||
| Karnataka | 62.4 | ||
| Kerala | 70.6 | ||
| Madhya Pradesh | 56.5 | ||
| Maharashtra | 64.5 | ||
| Orissa | 57.6 | ||
| Punjab | 66.9 | ||
| Rajasthan | 59.8 | ||
| Tamil Nadu | 63.7 | ||
| Uttar Pradesh | 58.9 | ||
| West Bengal | 62.8 | ||
| India | 60.8 |
Source: Registrar General of India (2003) SRS Based Abridged Lefe Tables. SRS Analytical Studies, Report No. 3 of 2003, New Delhi: Registrar General of India. The data are for the 1995-99 period; states subsequently divided are therefore included in their pre-partition states (Chhatisgarh in MP, Uttaranchal in UP and Jharkhand in Bihar)
