Question

These letters are the same when they are made upside-down: H, I, N, O, S, X, and Z.

Answer 1

And what is the Question?

Answer 2

How many three-letter "words" can be formed that are the same when they are upside-down?

Answer 3

Fake Question....... not a mathematics question

Answer 4

At first, I thought of \(7P3\), but then I saw that repetition is allowed, so I thought of \(21P3\)

Answer 5

@goformit100 It's called combinatorics.

Answer 6

Neither is correct.

Answer 7

Ok Then :)

Answer 8

7*7*1

Answer 9

so, 49

Answer 10

how the 1?

Answer 11

it might be 7 * 7 * 7

Answer 12

The first and the last letter must be same

Answer 13

Oh yes!

Answer 14

looks s and z made upside-down, they were not same :)