vinamra wrote:Equally correct answers would have been:
a > -1000000
a doesn't equal 53
a < 745.329
In fact all the alternate answers give by you are Correct, because it hasn't got any "=" sign....
the following options would be wrong:
a=> -1000000 (because in no way a= -1000000)
a<= 745.329 (because in no way a= 745.329)
I think the "Equal or =" sign is making every1 confuse!
The equal sign is irrelevant, since it's equal or greater than; the first and third statements would also be correct as you posted.
Let's look at a much simpler question:
If x=5, which of the following MUST be true:
1) x > 3
well yes, if x=5 then it's always greater than 3... must be true.
2) x >= 0
well yes, if x=5 then it's never negative... must be true
3) x <= 1000000
well yes, if x=5 then it's always less than or equal to a million... must be true.
Again, it's all about understanding the question. Saying that it must be true that x is greater than or equal to 0 doesn't mean that it necessarily could be 0, it just means that it's always non-negative.
Here's another non-math example:
If Joe is a human boy, which of the following MUST be true:
1) Joe is not a pig;
2) Joe is either a dog, human, or tree; and
3) Joe is either a boy, girl or rock.
All 3 of those statements MUST be true.
