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What are the differences between verification and validation?
Validation is the checking of data before processing to ensure that it is acceptable for it or not. E.g. When entering a date, the validation for month is 1-12, you cannot enter 13, its out of range. Similarly a telephone number cannot contain letters.Verification is the checking of data that has been copied from one place to another to ensure that is replaces the original one. E.g. PASSWORD. When you sign up in a site, just like WIKIANSWERS, you have to enter your password twice, the second entry being compared with the first.Example in an a paper if a teacher asks us to cross xheck thats validation and when the teacher checks it again orr a re-check thats verification
What is negative one plus negative eleven?
negative twelve of coarse, just take of the negative out and just say 11 plus 1
What do you do when the input and output is a fraction?
If it is a fraction, then it is a fraction. You just have to deal with it!
What does a negative plus a negative means?
It's just a word-description of the process of adding two negative numbers. It's really easy to do. Just add the two numbers and write the answer with a negative sign.
Is the product of an even number of negative numbers negative?
No. Just try it out with 2, or 4, negative numbers.
