Question

C = {x:x is a two-digit natural number such that the sum of its digits is 8}. Write in roster form

Answer 1

{17,26,35,44,53,62,71,80}

Answer 2

Answer:

Roster form:

C = {17,26,35,44,53,62,71,80}

Step-by-step explanation:

Given C = {x:x is a two -digit natural number such that the sum of its digits is 8}

10,11,12,....,99 are two digit natural numbers.

Two digit natural numbers whose sum of the digits is 8 are ,

1+7 = 8

2+6 = 8

3+5 = 8

4+4 = 8

5+3 = 8

6+2 = 8

7+1 = 8

8+0 = 8

Therefore,

C = {17,26,35,44,53,62,71,80}

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