दो क्रमागत विषम प्राकृतिक संख्याओं के वर्गों का अंतर हमेशा किससे 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?