why HCl solution has same value of morality and normality

Dear Student,

For HCl molarity (M) and normality (N) are same because HCl can release only one H⁺ ion. 
​​​​​​$N = M \times n-factor$
For acid n-factor is the number of replaceable H⁺ ion released in water.
For HCl it is 1 so N = M

Regards