There are 9 choices for the first digit: {0, 1, 2, 3, 4, 5, 7, 8, 9}
There are 10 choices for the second digit: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
There are 10 choices for the third digit: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
There are 5 choices for the fourth digit: {0, 2, 4, 6, 8}
Multiply the number of choices per digit to get: 9*10*10*5 = 90*50 = 4500
Answer: 4500
<u>→ Chapter : </u><span>
<u>Equation of A Straight Line </u></span>
<u>←</u><em>≡ General equation of a straight line:</em>⇔
<em>≡ Solution:</em>⇔ To know the slope in the equation, we just need to see the variable of x

∴ So, the slope of this equation is
A and b because the "product" is the answer to multiplication, and those are the only answers where 7 and n are being multiplied. Answer b is technically more correct than a is because the coefficient should come before the variable.
2y - 2 < 14
2y < 14 + 2
2y < 16
y < 16/2
y < 8