A watch loses 2 minutes for every 12 hours. The watch is set to the right time at 11 a.m. on Monday. At the time 11 p.m. on the immediate coming Friday, the faulty watch shows the time :

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) :