Mathematical logic Flashcards
1
Q
Lucy is 10 and Mary is half of Lucy’s age. How old will Mary be when Lucy is 50?
A
Mary will be 45; because she was 5 when Lucy was 10.
2
Q
What is a “set” ?
A. Collection of objects B. Well-defined collection of objects C. Elements of the set D. Descriprion E. Collection
A
B. Well-defined collection of objects
3
Q
What is the percent form of the following decimal:
o.354
A
35.4%
4
Q
What is 45% of 300?
A
135
The base is 300 and the percent is 45% = 0.45
percent (0.45) x base (300) = 135
5
Q
15 is what percent of 50?
A
30%
15 ÷ 50 x 100 = 30%
