Hi,

Is there any mistake in it?

I'm only hijacked by numbers, otherwise I never thought of this course !

Only text in bold !
Abdullah SaleemI'm only hijacked by numbers, otherwise I never thought of this course !
Grammatically, it's a comma splice.
(You have two independent clauses with neither a conjunction nor a semicolon.)

Semantically, I can't understand what you want to say.

Could you try explaining it again?

Are you possibly talking about "credits"?

(Otherwise, I would never have considered [taking] this course.)

I would use two sentences.

Best regards, - A.
Yes, about credits.

So, It should be like this

I'm only hijacked by numbers. Otherwise, I would never have considered [taking] this course. ???
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Abdullah SaleemSo, It should be like this
I'm only hijacked by numbers. Otherwise, I would never have considered [taking] this course. ???
Yes. This would be fine assuming you're talking to a friend, or someone who is sympathetic to your situation.
The perfect tense is optional, but I think it's best. You could also say, "Otherwise I would never consider [taking] this course.

I don't think it would be wise to admit to University officials that you're taking a course you're not interested in, simply because you need the credits.

Also, the sentence, "I'm only hijacked by numbers" requires some context to be clearly understood.

It's a clever, somewhat inigmatic thing to say, and is fine when spoken to a friend who understands what you're talking about. But if you were to say it to someone who has a position of authority over you, you might come across as being cavalier.

Regards, - A.
Got me right !

It's for someone who is sympathetic to my situation. That's not for the officials.

Thnx for the help.