Aptitude Discussion

Q. |
The letters $B,G,I,N$ and $R$ are rearranged to form the word 'Bring'. Find its probability: |

✔ A. |
$\dfrac{1}{120}$ |

✖ B. |
$\dfrac{1}{5^4}$ |

✖ C. |
$\dfrac{1}{24}$ |

✖ D. |
$\dfrac{1}{76}$ |

**Solution:**

Option(**A**) is correct

There are total 5 letters. The probability that $B$ gets the first position is \(\dfrac{1}{5}\)

The probability that G is in the second position is \(\dfrac{1}{4}\)

Likewise, probability for $I,N$ and $G$

Hence required probability:

\(=\dfrac{1}{5}\times \dfrac{1}{4}\times \dfrac{1}{3}\times \dfrac{1}{2}\times 1\)

\(=\dfrac{1}{120}\)

**Shubham**

*()
*

say we have total number of probability as 5*4*3*2*1=120

and number of favourable outcomes is =1

so p=1/120