1.

The number of distinct terms in the expansion of (x + y – z)16 is (a) 136(b)  153(c)  16(d)  17

Answer»

Correct option  (b)  153

Explanation:

Apply n+r–1Cr–1 to get number of terms 16 + 3 – 1C3 – 1 = 18C2

= 153



Discussion

No Comment Found