Mean x = Sum of nos. / Count of numbers = 1111/11 = 101
Median y = Middle term when number are arranged in ascending order = 104
Mode z = Number which is present maximum number of times = 91
2x^2 + 4zy + 3z^2 = 2* (101)^2 + 4*91*104 + 3*(91)^2 = 83101
Jaadu went to buy a chocolate worth Rs. x. He gave Rs.20 rupee note to the shopkeeper to buy the chocolate then shopkeeper gave rest of the money in the denominations of 50 paise, 2 rupee, and 5 rupees. If the ratio of the number of coins is 5:2:1 respectively. Then what is the price of the chocolate?
When A covers 400m B Covers 280m
When A Covers 400m C covers 320
A : B = 400 : 280
A : C = 400 : 320
C/B = (C/A*A/B) = (320/280) = 320:280
When C covers 320 m, B covers 280 m.
When C covers 1000 m, B covers (280/320)*1000)m = 875m
Therefore, C beats B by (1000 - 875) m = 125 m.