The difference between simple interest and compound interest on Rs. 10,000 for 2 years at 10% is:

A. 90
B. 95
C. 100
D. 105

Solution:
SI = (10,000×10×2)/100 = 2000.
CI = 10,000(1.1² – 1) = 10,000(1.21–1) = 2100.
Difference = 100.
Answer: C.