{x:x is a two digit natural number and the sum of its digits is less than 8} write it in rooster form

Question

{x:x is a two digit natural number and the sum of its digits is less than 8} write it in rooster form​

Savannah · Answer

Answer:    c = {10,11,12,13,14,15,16,20,21,22,23,24,25,30,31,32,33,34,40,41,42,43,50,51,52,60,61,70}

Emma · Answer

Answer:   {x:x is a two digit natural number and the sum of its digits is less than 8}   Roster     Form     :  -     {  1  0  ,  1  1  ,  1  2  ,  1  3  ,  1  4  ,  1  5  ,  1  6  ,  2  0  ,  2  1  ,  2  2  ,  2  3  ,  2  4  ,  2  5  ,  3  0  ,  3  1  ,  3  2  ,  3  3  ,  3  4  ,  4  0  ,  4  1  ,  4  2  ,  4  3  ,  5  0  ,  5  1  ,  5  2  ,  6  0  ,  6  1  ,  7  0  }  .

Abigail

4) (-12) x 6 (-12) x 4=

(A) 24

(B) 60

(C) -60

(D) -24

what is the cardinality of the set of odd positive integer less than 10?

2 thoughts on “{x:x is a two digit natural number and the sum of its digits is less than 8} write it in rooster form”

c = {10,11,12,13,14,15,16,20,21,22,23,24,25,30,31,32,33,34,40,41,42,43,50,51,52,60,61,70}

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