A student found the 1357th day from 1st March, 1998 as Friday. Then the immediate date after
1st March, 1998 which falls on Thursday is :

Ramesh gets a discount of 30% on his purchase bill of Rs.9100. What is the total discount he got? (In Rs)

If the arithmetic mean of 13 observations 511, 512, 514, 505, 513, 507, 509, 504, 512, 513, X, 507, 511 is 492. Find the value of "X" in the observations.

The average weight of 263 fertilizer bags is 63 kg. If the weight of the box(in which the fertilizer bags are kept) is included, the calculated average weight per fertilizer bag will increase by 0.8 kg. What is the weight of the box? (In kg)

In a moderately asymmetrical series, the values of arithmetic mean and median are 161 and 161.5 respectively. What is the value of the mode?

If A x B implies A2 + B2, AYB implies A2 - B2, AZB implies (A + B)2, AMB implies (A - B)2, calculate the value of (373)M(413) :