Question

Write the following sets in roster form:

(i) A = {x : x is an integer and –3 ≤ x < 7}

(ii) B = {x : x is a natural number less than 6}

Answer 1

Answer:

Write the following sets in roster form:

(i) A={x:x is an integer and−3<x<7}

(ii) B={x:x is a natural number less than 6}

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

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

(v) E= The set of all letters in the word TRIGONOMETRY

(vi) F= The set of all letters in the word BETTER

Answer 2

Hola mate

Here is your answer -

(i) A = {x : x is an integer and –3 ≤ x < 7}

Integers are …-5, -4, -3, -2, -2, 0, 1, 2, 3, 4, 5,   6, 7, 8,…..

A = {-3, -2, -1, 0, 1, 2, 3, 4, 5, 6}

(ii) B = {x : x is a natural number less than 6}

Natural numbers are 1, 2, 3, 4, 5, 6, 7, ……

B = {1, 2, 3, 4, 5}