The empty set is a _______ of {1,2}
a) Subset
b) Super Set
c) Both A and B
d) None of these
Explanation: The empty set is a subset of every set, including the set {1, 2}. A subset is a set that contains elements that are all also elements of another set. Since the empty set has no elements, it is considered a subset of any set, including {1, 2}.
Which of the following is NOT a natural number?
a) 1
b) Infinite
c) -1
d) 0
Explanation: The correct answer is d) 0. Zero (0) is not considered a natural number as natural numbers typically start from 1 and go on indefinitely. Natural numbers are positive whole numbers, while 0 is considered a whole number but not a natural number
Explanation: The square root of 784/841 is 29/28. The square
root of a fraction is the square root of the numerator divided by the square
root of the denominator. In this case, the square root of 784 is 28 and the
square root of 841 is 29, resulting in 28/29
If a = 2,
b = -3, c = 4, then a2+ab+c2=?
a) 12
b) 13
c) 14
d) 15
Explanation: a2 + ab + c2 = ?
putting the value a =2 and b =-3 and c= 4
22 + (2 x -3) + 42
4 – 6 + 16 = 20 – 6 = 14
Sum of x + 7y – 3 and 6x – 2y + 5 is:
a) 7x + 9y + 8
b) 7x + 2y + 5
c) 7x + 2y + 4
d) 7x + 5y + 2
