Question

c = {x : x is a two digit natural number such that the sums of its digits is 8}

Answer 1

Answer:

C = {x : x is a two-digit natural number such that the sum of its digits is 8} The two digit numbers having sum equal to 8 are: 17,26,35,44,53,62,71,80.

Answer 2

Appropriate Question :-

Set builder form :

c = {x : x is a two digit natural number such that the sums of its digits is 8}

Convert into Roster form :

Solution :-

We have,

Set builder form :

• c = {x : x is a two digit natural number such that the sums of its digits is 8}

Roster form :

• C = { 17,26,35,44,53,62,71,80 }

Verification :-

$\sf:\longmapsto{1 + 7 = 8} \\ \sf:\longmapsto{2 + 6 = 8} \\ \sf:\longmapsto{3 + 5 = 8} \\ \sf:\longmapsto{4 + 4 = 8} \\ \sf:\longmapsto{5 + 3 = 8} \\ \sf:\longmapsto{6 + 2 = 8} \\ \sf:\longmapsto{7 + 1 =8 } \\ \sf:\longmapsto{8 + 0 = 8}$

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Learn more from brainly :

5.Write the following sets in roster form.

(i)B = {x : x is a natural number smaller than 6}

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

(iii)D = {x : x is a prime number which is a divisor of 60}.

(iv)E = {x : x is an alphabet in BETTER}.

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