Javascript Tutorial in Hindi - 51 captcha code in javascript , javascript captcha code

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In javascript a special object is given , name of this object is Math.
The JavaScript Math object is used to do mathematical calculations on numbers.
Math.random(): This method will returns the value in between 0 and 1.
Here we have used Math object and generated captcha.
Where we have created two random numbers. and generated string to operate addition on two numbers.