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निम्नलिखित में से कौन एक valid identifier नहीं है? , Which one of the following is not a valid identifier?
Which one of the following is not a valid identifier?
A.
_infomax
_infomax
B.
3infomax
3infomax
C.
infomax_ica
infomax_ica
D.
infomax123
infomax123
Solution
B. 3infomax
Explanation
The first character of an identifier can only contain alphabet(a-z , A-Z) or underscore ( _ ).
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