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Elitmus Latest Exam Pattern - Elitmus Sample Question with Solutions Page 302

(#M40008866) ELITMUS QUESTION Keep an EYE

in a certain examination paper there are n questions. For j=1,2,3,.....n, there are 2^(n-1) students who answered j or more question wronlgy. if the total number of wrong answers is 4096 then the value of n is
a)12
b)11
c)10
d)9

Asked In Elitmus amrit bhagat (13 years ago)

Unsolved Read Solution (15)

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(#M40008865) ELITMUS QUESTION Keep an EYE

how many six digit number can be formed using the digits 1 to 6, without repetition, such that the number is divisble by the digit at unit's place

Asked In Elitmus amrit bhagat (13 years ago)

Unsolved Read Solution (22)

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(#M40008864) ELITMUS QUESTION Keep an EYE

a natural number has exactly 10 divisors including 1 and itself. how many distinct prime factors can this natural number can have?

Asked In Elitmus amrit bhagat (13 years ago)

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(#M40007613) ELITMUS QUESTION Keep an EYE

Let Sn denote the sum of first n terms of an A.P.. If S2n = 3Sn, then the ratio S3n/Sn is equal to
(a) 4 (b) 6
(c) 8 (d) 10

Solution

We know that Sn = n(n+1)/2
now it is given that
S2n = 3Sn
=> 2n(2n+1)/2 = 3n(n+1)/2
=> 2(2n+1) = 3(n+1)
=> 4n+2 = 3n+3
=> n = 1
then S3n/Sn = [3n(3n+1)/2]/[n(n+1)/2] = 3*4/1*2 = 6

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Asked In Elitmus SAKSHI AGARWAL (13 years ago)

Solved Read Solution (18)

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(#M40002193) ELITMUS QUESTION puzzle.. Keep an EYE

6 Bangles each of 4cm in daimeter,what is ther minimum diameter of plate required so that each bangles are kept without overlapping(bangles touching each other)?

Asked In Elitmus sanjeev (14 years ago)

Solved manojkumar s Read Solution (29)

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(#M40002196) ELITMUS QUESTION puzzle.. Keep an EYE

given x=123456 and z=x-y then for how many values of y ,z value found is divide by 48,,98,105 ????

Asked In Elitmus sanjeev (14 years ago)

Unsolved Read Solution (5)

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(#M40002195) ELITMUS QUESTION puzzle.. Keep an EYE

how many no can be formed using digits (1,2,3,4,5,6,7,8,9)..such that they are in increasing order(eg:0 12345,345,6789,123456789)???

Asked In Elitmus sanjeev (14 years ago)

Unsolved Read Solution (33)

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(#M40002194) ELITMUS QUESTION puzzle.. Keep an EYE

p,q,r are distinct single digit no,such that
(10p+q)^2=110r+q
such that each side is greater than 310..ten what is the value of q?

Asked In Elitmus sanjeev (14 years ago)

Unsolved Read Solution (7)

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(#M40002192) ELITMUS QUESTION puzzle.. Keep an EYE

three dices are thrown what is d probabily to gat atleast one six?

Asked In Elitmus sanjeev (14 years ago)

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(#M40002131) ELITMUS QUESTION cubes Keep an EYE

find the number of ways you can fill a 3x3 grid(with four courners defined as a,b,c,d) if u have 3 white marbles and 6 black marbles

Asked In Elitmus sanjeev (14 years ago)

Solved suchandra raavi Read Solution (18)

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