किन्हीं दो क्रमागत सम संख्याओं के वर्गों का अंतर हमेशा निम्नलिखित में से किस संख्या से पूर्णतः विभाज्य होता है?

What is the remainder when (120)188 is divided by 7?

What is the unit digit of the product of all even numbers between 1 and 11?

When a number is divided by 136, it leaves a remainder of 36. If the same number is divided by 17, what will be the remainder?