Quantitative Aptitude Questions
B
2*3+1=7,7*3+3=24,24*3+5=77,77*3+7=238
step 1--> 3*1-1=2
step 2--> 3*2-2=7
step 3--> 3*3-3=24
step 4--> 3*4-4=77
step 5--> 3*5-5=238
36 people {a1, a2, ..., a36} meet and shake hands in a circular fashion. In other words, there are toTALLY 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, ..., {a35, a36}, {a36, a1}. Find the size of the smallest set of people such that the rest have shaken hands with at least one person in the...
For at least one person & for exactly one person =36/3
For at least two person & for exactly two person =36/2
so
ans is 36/3= 12
if question is asked lyk no "cycle" then n-1.
i.e.36-1
the answer could be {a2,a5,a8,a11,a14,a17,a20,a23,a26,a29,a32,a35}
120 miles
b)
let he can select a picnic spot =x m
.
. . x/40+x/30=8
x=137.1 m
so ans is b.
Let distance = 'd'
Let us assume forward journey time is 't1'
Return journey time is 't2'
Given t1+t2=8
But time = distance / velocity
t1 = d/40
t2 = d/30
Therefore t1+t2 = d/40 + d/30 = 8
d=137.142
1/3 of a number is 3 more than 1/6 of the same number. What is the number?
18
Let no is x
so i/3 of a no is x/3
and now form the equation according the given language in question
x/3=3+x/6
By solving this equation x=18 so no is 18
On planet corba, a solar blast has melted the ice caps on its equator. 8 years after the ice melts, tiny plantoids called echina start growing on the rocks. Echina grows in the form of a circle and the relationship between the diameter of this circle and the age of echina is given by the formulad = 4...
8yrs
How many 5 digit numbers can be formed using the digits 1, 2, 3, 4, 5 (but with repetition) that are divisible by 4?
Divisibility rule of 4 is last two digits are divisible by 4 so in 5 digit no last two digit should always be 12,24,32,44,52; (any one of them may be) so for last two digits 5 ways are possible ; si...
It is the formula...5^n-1, where n is no of digits..
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Answered by: pratibha
Answered On : Nov 5th, 20075 m/sec
1 m/s
5m/sec...
For the fIFA world cup, paul the octopus has been predicting the winner of each match with amazing success. It is rumored that in a match between 2 teams a and b, paul picks a with the same probability of a's winning
33.33%
because there r 3 ways to pick probably..
1. not selecting anything
2. selecting A
3. Selecting B
. A candidate appearing for an examination has to secure 40% marks to pass paper i. But he secured only 40 marks and failed by 20 marks. What is the maximum mark for paper i?
let us consider x is the maximumber number of marks.
ans is 40%of paper 1=obtained no+faied by no.
40% of y=40+20
=150
x+2y+4z=22
Let cost of 1 pencil, 1 pen and 1 eraser be x,y,z.
now, x+2y+4z=22 - (1)
5x+4y+2z=32 - (2)
subtracting (2)-(1);
4x+2y-2z=10 or 2x+y-z=5 -(3)
subtracting (2)-(3);
3x+3y+3z=27
Answer=Rs27
Draw the diagram and join the two end points. We obtain a triangle base=11, height=5. Apply Pythagoras theorem.
by pythagorous we getsqrt(89)+3 km=12.83
After the typist writes 12 letters and addresses 12 envelopes, he inserts 1 letter per envelope randomly into the envelopes. What is the probability that exactly 1 letter is inserted in an improper envelope?
0. as 1 letter cannot be in improper envelope. there has to be more than 1 letter that is in improper envelope
Given 3 lines in the plane such that the points of intersection form a triangle with sides of length 20, 20 and 30, what is the number of points equidistant from all the 3 lines?
Ans: 1
As it is the incenter of the formed triangle which is equidistant from all the three lines...
Find the right number, from the given options, at the place marked by the question mark: 2, 4, 8, 32, 256, ?
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Answered by: aravinthan2k6
Member Since Dec-2007 | Answered On : Aug 16th, 2009
Each of the preceding number is multipied by the previous number
Missing number is 4096
next no. is multiple of last two no.
so next will b =256*32=8192
Two pipes a and b fill at a certain rate b is filled at 10,20,40,80,. If 1/16 of b if filled in 17 hours what time it will take to get completely filled.
For the fIFA world cup, paul the octopus has been predicting the winner of each match with amazing success. It is rumored that in a match between 2 teams a and b, paul picks a with the same probability as a's chances of winning.Let's assume such rumors to be true and that in a match between x and y,...
A circular dart board of radius 1 foot is at a distance of 20 feet from you. You throw a dart at it and it hits the dartboard at some point x in the circle. What is the probability that x is closer to the center of the circle than the periphery?
Given a collection of points p in the plane, a 1-set is a point in p that can be separated from the rest by a line; i.E. The point lies on one side of the line while the others lie on the other side. The number of 1-sets of p is denoted by n1(p). Find the maximum value of n1(p) over all configurations...
A sheet of paper has statements numbered from 1 to 35. For all values of n from 1 to 35, statement n says "at most n of the statements on this sheet are false". Which statements are true and which are false?
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L=7 G=8 Total number of students(U)=15 Number of students who study neither of them (N)=3 draw a simple diagram representing the above situation. we need to find out L INTERSECTION G. Thus we have, L...
Let A= Latin = 7B = Greek = 8Then, A + B = A (UNION) B + A (INTERSECTION) B 7 + 8 = 15 - 3(3 NOT STUDIED) + ? &nb...