A group of students decided to buy a Alarm Clock priced between Rs. 170 to Rs 195. But at the last moment, two students backed out of the decision so that the remaining students had to pay 1 Rupee more than they had planned. If the students paid equal shares, the price of the Alarm Clock is
180
Let cost of clock = x
number of students = n
then xn−2=xn+1⇒x=n2−2n2⇒170≤n2−2n2≤195