B. 5
C. 10
D. 20
Suppose, John arranges stack of Gold and Silver coins in such a way that each stack either contains Gold or contains Silver coins only.
He also tries to arrange them in the least area.
Here, the number of coins in each stack is the common factor of number of Gold and Silver coins.
If we find the highest common factor, then the area occupied by the coins will be least.
Hence, in this situation, we have to find the common factor.
Suppose, George and David are walking along the circular pathway of a park with different speeds.
The problem is to find the time after which they will meet again at the starting point.
Clearly, here the required time is the common multiple of independent time taken by both.
Y=-4x^2
The difference between 400 and 273 is 127
The given numbers are,
400 and 273
The difference between 400 and 273 is calculated by subtracting the smaller number from the larger number. So,
400 - 273 = 127.
Now take a creative approach to solve it,
Imagine you have a basket of 400 apples, and a friend takes away 273 apples. How many apples do you have left?
Simply subtract:
400 - 273 = 127.
Or simply
4 0 0
- 2 7 3
__________
1 2 7
___________
So, the difference between 400 and 273 is 127 apples.
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