बहुपद (21-4t) में चर कौन सा है?
Which is the variable in the polynomial (21-4t)?
Explanation opens after your attempt
C. (t)
Concept
In (21-4t), the changing symbol is (t). Therefore the variable is (t).
Why this answer is correct
The correct answer is C. (t). In (21-4t), the changing symbol is (t). Therefore the variable is (t).
Exam Tip
(21-4t) में बदलने वाला चिन्ह (t) है। इसलिए चर (t) है।
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