QusWhich one of the following is not a valid identifier? Qusनिम्नलिखित में से कौन एक valid identifier नहीं है?

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A. _infomax
B. 3infomax
C. infomax_ica
D. infomax123

Solution

B. 3infomax

Explanation

The first character of an identifier can only contain alphabet(a-z , A-Z) or underscore ( _ ).