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CGP EDU Academic Team
Published on: August 13, 2026
Five numbers x 1 , x 2 , x 3 , x 4 , x 5 are randomly selected from the numbers 1, 2, 3,......, 18 and are arranged in the increasing order (x 1 < x 2 < x 3 < x 4 < x 5 ). The probability that x 2 = 7 and x 4 = 11 is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
No. of ways to select and arrange x 1 , x 2 , x,, x 4 , x 5
from 1,2,3...................18
n(s) = 18 C 5
x 1 (x 2 ) x 3 (x 4 ) x 5
7 11
n(E) = 6 C 1 x 3 C 1 x 7 C 1
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