Answer:
31
Step-by-step explanation:
The answer is B, if you earn 200 points, then you receive 3 stars
Multiplication is a very old concept in math. So old that it dates back to ancient egypt, mesopotamia, etc. Each place probably came up with the concept on their own parallel to one another, or trade helped make the concept spread. It's very likely that the actual person who came up with the idea is unknown and won't be known since the concept is so ancient. It's like asking "who came up with the alphabet" which is an equally old concept.
Side note: multiplication is repeated addition. So if we added 3+3+3+3+3 to get 15, then we can say 3*5 = 12 as a shortcut. So its likely ancient peoples were adding the same number to itself over and over, leading them to develop a shortcut notation/method to get the answer quicker.
Answer:
51
Step-by-step explanation:
Let x be the number
When x divided by 5 then it gives remainder 1 and when divided by 12 gives remainder 3.
We have to the value of x.
Using Euclid's algorithm
Where 
...(1)
When q=10 and p=4
Then,
q=10 and p=4 satisfied the equation (1)
Substitute q=10
Hence,51 is the least counting number which when divided by 5 gives the remainder of 1 and when divided by 12 gives us the remainder of 3.
4
Absolute value of -4 would be 4
