Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The value(s) of r satisfying the equation
69 C 3r–1 – 
= 
– 
is/ are -
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(c, d)
69 C 3r–1 + 69 C 3r = 
+ 
⇒ 70 C 3r = 
⇒ 3r = r 2 ⇒ r = 0, 3
3r + r 2 –70 = 0
⇒ r = 7, –10
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