Question

There are 5 letters and 5 envolepe find the number of ways letters can be put in wrong envolope

Answer 1

If 5 letters has the possibility of 5 envelopes,

(if remains 4 letters and 4 envelops)

if 4 letters has the possibility of 4 envelops

(if remains 3 letters and 3 envelopes)

if 3 letters has the possibility of 3 envelopes

(if remains 2 letters and 2 envelopes)

if 2 letters has the possibility of 2 envelopes

(if remains1 letter and 1 envelope)

if letter has the possibility of 1 envelope

I.e

5×5=25
4×4=16
3×3=9
2×2=4
1×1=1
answer =55

(Or)

5×4×3×2×1=120
5×4×3×2=120
5×4×3=60
5×4=20
5=5
answer =325

I can't understand your question clearly so that's why I'm give two answers