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all the natural numbers less than n are written on the blackboard and when one of the number is erased the average of remaining numbers is found out to be 28.what is the erased number????can u please explain in detail???

How do I solve para jumbles?

sum of series of 1+2/4+3/8+4/16+..........can u please elaborate and explain it.i didnt get the solution which is already there in course..

a solid right circular cone is cut into 4 pieces of equal height, with each cut being parallel to its base. If the semi vertical angle of the original cone is 30° what is the ratio of the total surface area of the original cone to the sum of the total surface areas of the 4 pieces?? ans= 12:19.. approach plzz

if log(base2(5x+3y)) + log(base2(5x-3y)) = 10 where x and y are integers, the no of possible values of (x,y) is??? ans = 4.. approach plz

how do i solve para jumbling questions

how do i solve para jumbling questions

how do i solve para jumbling questions

in cat quotient, DI test 3,question no 5, why is the answer not option 'a' ? the given answer is d but i am not convinced. Please clarify

In your reasoning section this is a question" Two traders, Chetan and Michael, were involved in the buying and selling of MCS shares over five trading days. At the beginning of the first day, the MCS share was priced at Rs 100, while at the end of the fifth day it was priced at Rs 110. At the end of each day, the MCS share price either went up by Rs 10, or else, it came down by Rs 10. Both Chetan and Michael took buying and selling decisions at the end of each trading day. The beginning price of MCS share on a given day was the same as the ending price of the previous day. Chetan and Michael started with the same number of shares and amount of cash, and had enough of both."