**Que:**If n is an odd integer, which of the following MUST BE an integer?

**I. \(\frac{n^2-1}{2}\)**

II. \(\frac{n-1}{2}\)

III. \(\frac{n}{2}\)

II. \(\frac{n-1}{2}\)

III. \(\frac{n}{2}\)

A. I only

B. II only

C. III only

D. I & II only

E. I, II, & III

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00:00

**A**

**B**

**C**

**D**

**E**

II. \(\frac{n-1}{2}\)

III. \(\frac{n}{2}\)

A. I only

B. II only

C. III only

D. I & II only

E. I, II, & III

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We have to find the options that must be true

‘MUST BE’: Choose only the options that are absolutely true in ALL cases

=> ‘n’ is an odd integer, Always an integer

=> n = odd = 2m+1 (m is always an integer)

Answer D

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