Ques:- Given n people live in n houses and at some instant all of them disappear and reappear in some other house. What is the probability that no two meet each other.
Ques:- WHAT YOU HAVE DONE IN YOUR SUMMER TRAINING
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Ques:- In a class of 60 students, the number of boys and girls participating in the annual sports is in the ratio 3 : 2 respectively. The number of girls not participating in the sports is 5 more than the number of boys not participating in the sports. If the number of boys participating in the sports is 15, then how many girls are there in the class? (1) Data inadequate (2) 20 (3) 25 (4) 30 (5) None of these
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A. 25
B. 34
C. 50
D. 2500
E. 1500
Recent Answer :
: c 50
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Recent Answer :
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A. 27 km/hr
B. 49 km/hr
C. 72 km/hr
D. 92 km/hr
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Recent Answer :
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Recent Answer :
: 55 + 70 = 125
125/14hrs = 60 mph
14 hours
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A. 75
B. 76
C. 77
D. 78
Recent Answer :
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Ques:- P and Q start a business with Rs.6000 and Rs.8000 respectively. Hoe should they share their profits at the end of one year?
Recent Answer :
: Explanation:
They should share the profits in the ratio of their investments.
The ratio of the investments made by A and B =
6000 : 8000 => 3:4
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A. 5149
B. 64851
C. 69993
D. 75142
Recent Answer :
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So 70000 -7 so the answer is C 69993
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Recent Answer :
: ₹1 today increases to (1+1/8) = 9/8 after 1year.
After 2 years it increases to 9/8 of 9/8 = (9/8)^2 =81/64 times.
Hence ₹64000 increase to 64000×81/64 =₹81000
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let no. of boys not participating be x
then the no. of girls not participating = x+5
no. of boys : girls participating = 3:2
given no.of boys participating = 15
therefore, the ratio is now 15:y(say)
then 3:2 = 15 : x
on solving 3/2 =15/y ie.., 3y =30 we get y =10
hence no. of girls participating =10
therefore total no of students paricipating = 15+10=25
total no of students in class =60 given
hence no. of students not participating = 60-25=35
therefore x+(x+5)=35
2x=30
x=15
therfore no of girls not participating =15+5=20
therefore total no of girls in class = no of girls
participating + no of girls not participating
=10+20
=30 is the answer