Question

The number of ways of forming an arrangement of 5 letters from the letters of the word ‘IIT JEE’ is

Answer 1

Step-by-step explanation:

arrangement of 4 letters from IITJEE

I-2

T-1

J-1

E-2

(case i) 4 different letters =4!=24

(case ii) 2 same + 2 same =

2!2!

4!

=6

(case iii) 2same + 2different =2

C

1

×3

C

2

×

2!

4!

=6×12

=72

total arrangement =72+6+24

=72+30

=102

hope helpful to you ❤️ please mark has brilliant please ❤️

Answer 2

Answer:

102 is correct

Step-by-step explanation:

✔️arrangement of 4 letters from IITJEE

I-2

T-1

J-1

E-2

✔️(case i) 4 different letters =4!=24

✔️(case ii) 2 same + 2 same

$= \frac{4.}{2.2.}$

✔️case iii) 2same + 2different =2C¹ ×3 C² × 2!4!

=6×12

=72

total arrangement =72+6+24

=72+30

=102