How many counting numbers have three distinct nonzero digits such that the sum of the three digits is 7?

Question

asked Nov 13, 2022 228k views

1 Answer

Melynda · Answer 1 · 2022-11-17T04:51:23+0000

Answer:

6

Explanation:

You have 2 conditions.

1. The digits must be different.

2. The digits must add to 7.

There aren't very many

124

142

214

241

412

421

That's it. That's your answer. There are 6 of them