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Radioactivity part 2 (in Hindi)
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This lesson deals with remaining questions of Radioactivity.

Ravi Ranjan Kumar
Founder of "The Selection Guru" Competitive Institute.Qualified:more than half a dozen govt.Exams.Youtube channels "UnBook" & "UnBook Talks"

Unacademy user
I have a pen and a pencil. or I have a pen and pencil. which one is correct. Plz explain.
Erica George
2 years ago
So in this sentence the first one is right. I have a pen and a pencil. in cases like this when you are confused, split the sentence into two parts. e.g I have a pen I have a pencil so the article 'a' will come in front of both the things. hence the right sentence would be the first one