The present worth of a certain bill due sometime hence is Rs. 400 and the true discount is Rs. 20. What is the banker's discount?

Rs. 19

Rs. 22

Rs. 20

Rs. 21

Correct Answer : D

01-Jan-2007 was Monday. What day of the week lies on 01-Jan-2008?

2 + 22 + 222 + 2.22 = ?

Which one of the following cannot be the square of natural number ?