Question

please solve it its very urgent please solve both part please ​

Answer 1

Answer:

a unit belonging to a mathematical system and subject to its rules Tell me a number divisible by 2. 4 : a word, symbol, or letter used to represent a mathematical number : numeral the number 5. 5 : a certain numeral for telling one person or thing from another or from others a house number.

Step-by-step explanation:

Answer 2

Answer:

$a = 60 \\ b = 90 \\ c = 30 \\ d = 180$