Question

If a, b and c represent the number of uppercase English alphabets
having zero, one, two lines of symmetry respectively, then find the value of a - b + c.

Answer 1

So, we conclude that

Number of alphabets with no lines of symmetry = 11

Number of alphabets with 1 line of symmetry = 11

Number of alphabets 2 lines of symmetry = 4

$\text{Thus,}a=11,b=11,c=4$

$\therefore a-b+c=11-11+4$

$=4$