A tortoise lives in a garden on a 7 × 5 plot of land as shown in the figure: в The tortoise is trying to get from point A(0,0) to point B(7,5) by walking along the edges of the grid in the garden, but only taking unit steps to the right or upwards. There is a small lake in the middle of the garden. (a) How many different paths can the tortoise follow from A to B that avoids the small lake in the middle of the garden? (Note: The tortoise can walk around the edges of the lake but can't swim across.)
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
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