In relations such as 'Change in inventories ≡ Production − Sales', the sign '≡' means that the relation:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → always holds, whatever the values of the variables
The sign ‘≡’ stands for an identity. An identity always holds, whatever the values on its two sides. An equation such as 2 × x = 4 holds only for one value of x.
NCERT (2026-27): “2.2.1 The Product or Value Added Method … The sign ‘≡’ stands for identity. Unlike equality (‘=’), an identity always holds irrespective of what variables we have on the left hand and right hand sides of it. For example, we can write 2 + 2 ≡ 4, because this is always true. But we must write 2 × x = 4. This is because two times x equals to 4 for a particular value of x, (namely when x = 2) and not always. We cannot write 2 × x ≡ 4. …” |