Latest Elitmus Aptitude Question SOLUTION: N be a number,the 2,3 and 5 base notations u get last digit is 1.and two out of three the leading digit is 1. N is equal to A)31 b)63 c)74 d)91

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(#M40154773) ELITMUS Numerical Ability question aptitude Keep an EYE

N be a number,the 2,3 and 5 base notations u get last digit is 1.and two out of three the leading digit is 1. N is equal to
A)31 b)63 c)74 d)91

Asked In Elitmus SESHADRI MITTAPALLI (8 years ago)

Unsolved Read Solution (9)

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Priya kumari  (8 years ago)

number shuld be in format of 2k+1,3k+1,5k+1
so take lcm of 2 3 5 we get 30k+1
so it may be 31 or 91
but in case of 31 leading digit of all 3 case is one
31 base2 = 11111
31 base3 = 1011
31 base5 = 111

so ans is 91

Is this solution Helpfull? Yes (15) | No (3)  

bharati roy  (8 years ago)

priya got it correct.
number shuld be in format of 2k+1,3k+1,5k+1
so take lcm of 2 3 5 we get 30k+1
so it may be 31 or 91
but in case of 31 leading digit of all 3 case is one
31 base2 = 11111
31 base3 = 1011
31 base5 = 111
while,
91 base2 = 1011011
91 base3 = 10101
91 base5 = 331


so ans is 91

Is this solution Helpfull? Yes (9) | No   

Amol  (8 years ago)

31 base2 = 11111
31 base3 = 1011
31 base5 = 111
Answer is 31.

Is this solution Helpfull? Yes (7) | No (4)  

Bushra  (8 years ago)

@priya kumari please tell me how do u convert 31 base 2 to a value? it wll be help ful ,,,

Is this solution Helpfull? Yes (3) | No   

sriramya.kodamati  (8 years ago)

@priya kumari please tell me how do u convert 31 base 2 to a value?

Is this solution Helpfull? Yes (1) | No   

himaan  (8 years ago)

for people who dont know how to calculate the base
heres an example take 99
and we have to calculate its base 5 keep dividing 99 by 5 and write the quotient along with remainder
see below u will understand

5|99
5|19|4
5|3|4
5|3|3

answer is 344

Is this solution Helpfull? Yes (1) | No (2)  

Ajith Kumar  (7 years ago)

conversion
31 base 5 - (5^2) + (5^1)+ (5^0)
1 1 1
=25 + 5 + 1
=31

Is this solution Helpfull? Yes (1) | No   

vaibhav  (8 years ago)

from the question the answer is 74

Is this solution Helpfull? Yes | No (3)  

anmol  (8 years ago)

Priya question says that two out of three leading digit is 1 so answer will be 31 not 91

Is this solution Helpfull? Yes | No (3)  

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