A sum amounts to Rs. 882 in 2 years at 5% compound interest. The sum is
800
Let the sum be P
Amount after 2 years =P(1+r100)n=P(1+5100)2
=P(105100)2=P(2120)2
Given, that amount after 2 years = 882
⇒P(2120)2=882
⇒P=882×20×2021×21=2×20×20= Rs. 800