Depending on what you need, could be many things. Coming from every positive power of 0 (, , etc), it must be . Coming from every negative power of 0 (, , etc) then it must be . Seeing that, for every other number, the power of zero is 1, must be too. Then what is it?
The thing is, there is no actual equation or complicated sum for this. You just have to change it out of , &. to sort your preference. But most of the time it is 1.
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That's interesting Praveen. Sounds a lot like 00. If you use the rule that 0 divided by anything must equal 0, then 00=0. However, if you use the rule that any number divided by itself is 1, then 00=1. But if you use the rule that anything divided by 0 is infinity (okay, not really something widely agreed upon, but I happen to think this is the case), than 00=∞. Hence why mathematicians say 00 is undefined.