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Question
Write (T) for true and (F) for false for the following statement:
(−1) ÷ (−1) = −1
Options
True
False
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Solution
False
This is because the division of any two negative integers always gives a positive quotient.
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The sum of two negative integers is a positive integer.
An atom changes to a charged particle called ion if it loses or gains electrons. The charge on an ion is the charge on electrons plus charge on protons. Now, write the missing information in the table given below:
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| Hydroxide ion | +9 | – | –1 |
| Sodium ion | +11 | – | +1 |
| Aluminium ion | +13 | –10 | – |
| Oxide ion | +8 | –10 | – |
Which collection of numbers correctly defines the set of integers?
