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ER. RAKESH Profile page        View Public Wall My Profile Page

lakhan jain    3 years ago
Rakesh, can you suggest some good books to prepare for elitmus....I mean from where do they refer max. no of questions while setting the paper?
Reply Like? Yes (1) | No   
Shaheen harun shaikh    5 years ago
Hi Rakesh , will you please guide me , would be vry helpful, thanks in advance u can contact me @shaikhshaheen85@gmail.com
Reply Like? Yes | No   
subhangi    5 years ago
Hi Rakesh, can u plz send me IBM materials including Business communication ,coding and apti questions.
mail- subhangi430@gmail.com
Reply Like? Yes | No   
Ram Kishor Bajpai    5 years ago
In a Chimp Zoo there are 1 billion monkeys. The probability that a monkey in the zoo has seen a Banyan tree is 0.6.
The probabilty that a monkey has seen a mango tree is 0.65. What is the minimum percentage of monkeys in the zoo who have seen both the trees?
(A)25% (B)39% (C)40% (D)60%
will you please help me?
Reply Like? Yes | No   
N.Vennela Rani    6 years ago
sir u r too intelligent how can u solve questions with in less time
Reply Like? Yes (3) | No   
deepu dk   5 years ago
27 IS THE PERFECT ANSWER
Like? Yes | No   
Akshay    6 years ago
http://www.m4maths.com/157388-if-systems-of-equations-3x-a-1-9y-2-a-30-and-2x-2-a-3y-2a-1-10-has-infinite-solutions-what.html
Reply Like? Yes (1) | No   
PILLI MEGHASAI    6 years ago
Please send solution for 1st August problem
Reply Like? Yes | No   
N.Vennela Rani   6 years ago
16, 28, 48, 92), (63, 15, 29, 107), (46, 28, 36, .....)

16 + 28 + 48 = 92 (Sum of first three number = fourth number)
63 + 15 + 29 = 107
46 + 28 + 36 = (110)
sum of first 3 numbers is equal to fourth number
Like? Yes | No   
PILLI MEGHASAI    6 years ago
tell me procedure
Reply Like? Yes | No   
Jigdrel Dorji    6 years ago
Hi bro could you explain in simplest way to solve this question.. Thanks
Q. Suppose two boys can read three books in four days. At the same rate, how long will it take 8 boys to read a dozen books? Explain with steps.
Reply Like? Yes (3) | No   
vivek pal   6 years ago
Ans-> 1/4 day ..................................
Like? Yes (2) | No   
Shantanu Sahoo    6 years ago
can you please solve this problem?
Reply Like? Yes (2) | No   
Shantanu Sahoo    6 years ago
One man and six women working together can do a job in 10 days. The same job is done by two men in p days and by eight women in (p+5) days. By what percentage is the efficiency of man greater than that of woman ?
Reply Like? Yes (1) | No   
MOJUMDER   6 years ago
Suppose 1 man in 1 day can do x part of the job and 1 woman can do y part of the job in 1 day.
Then, x + 6*y = 1/10...(1)
Again, 2*x = 1/p and 8*y = 1/(p+5).
Therefore, x = 1/(2*p) and y = 1/{8*(p+5)}.
Now these values of x and y in equation (1), solve for p and then you will get p=10. So, x = 1/20 and y = 1/120.
Hence, the efficiency of man is greater than that of woman by (1/20 - 1/120)/(1/120) * 100 = 500%.
Like? Yes (1) | No   
Gokul Krishnan    6 years ago
Brother could you please find the answer of this question find the sum of first 40 terms of series 1^2-2^2+3^2-4^2+...
Reply Like? Yes (1) | No   
RAKESH   6 years ago
(1^2-2^2)+(3^2-4^2)+(5^2-6^2)... +(39^2-40^2)
a^2-b^2=(a+b)(a-b)
= - [1+2+3+4+5+6+---------+ 39+40]
= -20*41
= -820
Like? Yes (2) | No (1)  
Hemant Kumar    7 years ago
hii brother,hw r u?
Reply Like? Yes (3) | No   
G.krishnaveni   7 years ago
hii brother,hw r u?
Like? Yes (2) | No   
RAKESH   7 years ago
any suggestion/query mail at, rakesh2010.234@rediff.com
Like? Yes (4) | No   
udaya    7 years ago
Rakesh can u give me ur mail id>
this is my mail id udayareddy443@gmail.com
Reply Like? Yes | No (1)  
G.krishnaveni    7 years ago
hii brother..wt r u studying
Reply Like? Yes (3) | No   
G.krishnaveni   7 years ago
hii brother,hw r u?
Like? Yes | No (1)  
Hemant Kumar   7 years ago
hii brother,hw r u?
Like? Yes | No   
G.krishnaveni   7 years ago
hii,hello,hw r u sir?
Like? Yes | No   
santosh    7 years ago
2.In a party abhishek and aishwarya shook hands.If abhishek shook hands with n as many women as men and aishwarya shook hands with m as many women as men
Q3.If n=3 and m=4 then no of people at the party?
Q4.If n=8 and m=9 then no of women at the party?
Reply Like? Yes | No (1)  
Hemant Kumar   7 years ago
hii brother,hw r u?
Like? Yes | No   
santosh    7 years ago
A monkey is 60 m away from banana tree to left side and 40 m away from mango tree to right side.when tail of monkey pulls from left side it moves 20 m to left and if tell pulls from right side then monkey moves 20 m towards right.This process continues till monkey will reach any of tree.
1. Total number of time when tail pulls=21.
2. Right side pulls 3 times more than left side.
Reply Like? Yes | No   
santosh    7 years ago
for rs 600 mr karan can buy a max of 24 cups of tea and for rs 1500 he can buy a maximum of 15 cups of coffee.he has 2200 in his pocket and purchase 8 cups of tea what is the max no of cups of coffee he can purchase with the remaning money
Reply Like? Yes | No   
santosh    7 years ago
How many liters of 20% alcohol should be mixed with 60 % alcohol to get 32% alcohol
(1) We get 70 liters of 32% alcohol
(2) We used 21 lit of 60% alcohol, to prepare 32%
A if the question can be answered by using one of the statements alone, but cannot be answered by using the other statements alone
B if the question can be answered by using either statement alone
C if the question can be answered by using both statements together,but cannot be answered by using either statement alone
D if the question cannot be answered even by using both the statements together
Reply Like? Yes (5) | No   
Ashutosh Athawale   7 years ago
D if the question cannot be answered even by using both the statements together
Like? Yes | No   
santosh    7 years ago
Is x^2+y^2 divisible by 5?

(1) When x-y is divided by 5, the remainder is 1
(2) When x+y is divided by 5, the remainder is 3
Reply Like? Yes | No   
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  • ER. RAKESH
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RAKESH Bihar
Rakesh (M)
  • Total Points 9517
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M4 Score
100
Score from best 50 Questions
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  • Total 1000     
  • M4 Score1000 / 10 = 100     
Bengal College of Engineering and Technology, Durgapur
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