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If Dev walks 30 miles/hr. he reaches 1 hour before and if he walks with a speed of 20 miles/hr. he reach 1 hour late. Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which he walks.
A farmer built a fence around his 17 cows, in a square shaped region. He used 27 fence poles on each side of the square. How many poles did he need altogether?
4i+8j+10k. something like this.
If ABC =C3C3 and CAB = D3D3, Then find D3÷B3D3÷B3
A train blows a siren one hour after starting from the station. After that it travels at 3/5th of its speed it reaches the next station 2 hours behind schedule. If it had a problem 50 miles farther from the previous case,it would have reached 40 minutes sooner. Find the distance between the two stations .
If the % of defective balls is 10% balls,and the number of defective balls is 5.The number of balls is
maths
15 Men take 21 days of 8 hrs. each to do a piece of work. How many days of 6 hrs. each would do if 21 women take. If 3 women do as much work of 2 men.
r= 5 n = 3 . If first pole has 2 flags ,third pole has 1 flag how many ways the remaining can be arranged?
Each row of letters or numbers has a rule connecting them. Write the next number or letterin the brackets. 1 , 4 , 9 , 16 , 25 , 36 , (_ _ _)
In a company 30% are supervisors and 40% employees are male if 60% of supervisors are male. What is the probability that a randomly chosen employee is a male or female?
Three cards are drawn at random from an ordinary pack of cards. Find the probability that they will consist of a king, a queen and an ace.
a grandfather has 5 sons and daughters and grandchildren.they have to be arranged in a row such that the first 4 seats and last four seats are to be taken by grandchildren and the grandfather would not sit adjacent to any of the grandchildren.
What is the selling price of a scooter? If the cost of the scooter is Rs 50 and a profit of 10% over selling price is earned.
If there are 1024*1280 pixels on a screen and each pixel can have around 16 million colors Find the memory required for this?