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Raj 10 years ago

Find the probability of drawing 4 white balls and 2 black balls from a bag containing 6 white balls 4 black balls and 1 red ball drawing 6 at random. (given ans 45/4004. I want complete
solution frends in easy method)

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Raj 10 years ago

A & B are the two independent witnesses in a cases. the probability tht A will speak the truth 3/4; & that of B is 4/5. In what percentage of cases are they likely to contradict each other in stating the same fact. (given ans 35%. I want complete solution frends in easy method)

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Raj 10 years ago

Q: A sum of money double itself in 10 years at simple interest. find the rate of interest. i need complete solution frnds.

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Jayjit Mandal 10 years ago

let p=x, a becomes =2x.
Time=10 years , I(interest)=a-p = x
RATE(r)= (100*I)/p*t
=(100*x)/(x*10)
10 % Ans U can suppose any value as a principal or sum

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Pradeep Singh 10 years ago

suppose 100 becomes 200 in 10 year.then interest rate is 10% .so answer is 10%

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Raj 10 years ago

Q: A sum of money amounts to Rs 850/- in 3 years n Rs 925/- in 4 years. what is the sum. i need complete solution frnds.

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Devendra Marghade 10 years ago

Rs. 625

If Sum =x & simple interest is calculated@ y /year , then
x+ 3y =850 ---(i) &
x+ 4y =925 ---(ii)
On solving (i) & (ii), x=625, y=75

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Pradeep 10 years ago

625 as { 4th year - 3rd yr = 925-850 ;; 1yr =75 ;; 3yrs =850;; 850-3*75=625}

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Anshu sharma 10 years ago

Plz send pdf for amcat tome on sharmaakanksha37@gmail.com

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Rajat Rokade 10 years ago

OK.....! I will send the pdf documents.

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Mohana 10 years ago

hey, can u plz send me the pdf for amcat @ mailtoomohana@gmail.com

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Raj 10 years ago

Q: a person loses 12 1/2% of his money n after spending 70% of the remainder. he is left with rs. 210. how much did he have at the begining i need complete solution dear...

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Ashraf Siddiqui 10 years ago

let he had Rs x in begining
since he loses 12 1/25 so he will be left with X-12 1/2 % 0f x
=>x-x/8=7x/8
now spending 70% of it mean....7x/8-70%of 7x/8
=>21x/80
acc to ques w get
21x/80=210
x=800
hence he had Rs 800 in begining

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Raj 10 years ago

Q: two nos r respectively 20% & 25% of a third no. what per cent is the first of the second. i need complete solution dear...

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A SIRISHA 10 years ago

ANSWER IS.......... 80 %

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Raj 10 years ago

The average age a family of 6 members is 22yrs. if the age of the youngest member is 7 yrs, then what was the averege age of the family at the time of the birth of the youngest member

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Akash Verma 10 years ago

(6*22-7-5*7)/5=18,, Subtracting the age of the youngest member and 7 years from each member , since average age asked during the birth of the youngest member

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Shaik Aarif Mohammed 10 years ago

average age of 6 members=22=>22*6=>132-7=125/5=25

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Shaik Aarif Mohammed 10 years ago

average age of 6 members=22=>22*6=>132-7=125/5=25 -7=18

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Raj 10 years ago

The average of marks obtained by 120 candidates in an examination is 35. if the average marks of passed candidates is 39 and failed candidates is 15. what is the number of candidates who passes the examination.

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abhishek narayan 10 years ago

let x be the no. of candidates passed.
39x+15(120-x)=35*120.
x=100

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Assam

Raj (M)

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