Question

a) A set which contains all the elements of other given sets is called __________ set.



b) By converting 5:7 into percentage, the answer will be__________ .



c) 64 in the index form can be written as _________ .​

Answer 1

Answer:

1 universal set

A set which contains all the elements of other given sets is called a universal set. The symbol for denoting a universal set is ∪ or ξ. 2. If P is a set of all whole numbers and Q is a set of all negative numbers then the universal set is a set of all integers.

2 71.428571428571%

Convert fraction (ratio) 5 / 7 Answer: 71.428571428571%

3 Note the following:

64 is a basic numeral or number. 43 is the index form (or power form) of 64. 4 × 4 × 4 is the expanded form of 64. For 64 = 4 × 4 × 4 = 43, the base number 4 appears three times as a factor of the basic numeral (or number) 64.