Write the following sets in the roster form:
{x:x is a positive integer less than 10 and `2^x -1` is an odd number}

Write the following set in roster form: B = {x : x is a natural number less than 6}

Write the following set in roster form: A = {x : x is an integer and -3 < x < 7}

Write the following set in roster form: D = {x : x is a prime number which is divisor of 60}

Write four negative integers less than -10.

Write the following set in roster form: F = The set of all letters in the word BETTER

The set A = {x : x is an odd number less than 10} equals :

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

Write the following set in roster form: E = The set of all letters in the word TRIGONOMETRY

Which of the following pairs of sets are disjoint:- {x : x is an even integer } and {x : x is an odd integer}

Write the following polynomial in the standard form, also write the degree. 10+x^2-3x .