A and B stand in a ring along with 10 other persons. If the arrangement is at random, the probability that there are exactly 3 persons between A and B, is

Question

A and B stand in a ring along with 10 other persons. If the arrangement is at random, the probability that there are exactly 3 persons between A and B, is (A) (1/11) (B) (2/11) (C) (3/11) (D) (4/11)

Tardigrade Admin · Accepted Answer

Take any three person among 10 person between A and B

Q. $A$ and $B$ stand in a ring along with 10 other persons. If the arrangement is at random, the probability that there are exactly 3 persons between $A$ and $B$ , is

$\frac{1}{11}$

$\frac{2}{11}$

$\frac{3}{11}$

$\frac{4}{11}$

Take any three person among 10 person between A and B

Q. A and B stand in a ring along with 10 other persons. If the arrangement is at random, the probability that there are exactly 3 persons between A and B, is

111​

112​

113​

114​

Take any three person among 10 person between A and B

Q. $A$ and $B$ stand in a ring along with 10 other persons. If the arrangement is at random, the probability that there are exactly 3 persons between $A$ and $B$ , is

$\frac{1}{11}$

$\frac{2}{11}$

$\frac{3}{11}$

$\frac{4}{11}$