If a , b and c are the greatest values of C p 19 , C q 20 and C r 21 respectively, then:

Question

If a , b and c are the greatest values of C p 19 , C q 20 and C r 21 respectively, then:, a 11 = b 22 = c 21, a 10 = b 11 = c 21, a 11 = b 22 = c 42, a 10 = b 11 = c 42

MARKS App · Accepted Answer

We know that, n C r is maximum at middle term. a = 19 C p = 19 C 10 = 19 C 9 b = 20 C q = 20 C 10 c = 21 C 6 = 21 C 10 = 21 C 11 Hence, a 19 C 9 = a 20 10 . 19 C 9 = a 21 11 . 20 10 . 19 C 9 ⇒ a 1 = b 2 = c 42 11 ⇒ a 11 = b 22 = c 42

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