Latest Elitmus Aptitude Question SOLUTION: Q. A 3 digit no in form a+4b+c is divisible by 42 then the no is neccessary divisible by a-9,b-2,c-6 d-none of these

• Placement Papers
• /
• Elitmus
• /
• Numerical Ability
• /
• Number System

Elitmus Question Papers:

(#M40031972) ELITMUS Numerical Ability question Keep an EYE

Q. A 3 digit no in form a+4b+c is divisible by 42 then the no is neccessary divisible by a-9,b-2,c-6 d-none of these

Asked In Elitmus siddharth (10 years ago)

Unsolved Read Solution (11)

Is this Puzzle helpful?   (2)   (1) Submit Your Solution Number System

Read Solution (11) :

Ritesh Sangwan  (10 years ago)

The question was.
A three digit no of the form abc. If a+4b_c is divisible by 42. Then the number is always divisible by
a) 6 b)2 c) 9 d) none of these

The answer would be none of these consider these
1. no be 393 so a+4b+c i.e, 3+9*4+3=42 but the number is not divisible by 2 or 6 or 9 and it satisfies the condition given in question. So the answer is none of these.

Saranya sankar. In the question it is not given that no is divisible by 42 but instead a+4b+c is divisible by 42.

Is this solution Helpfull? Yes (20) | No (6)  

Ashish Mishra  (10 years ago)

d-none of these
explaination: only combination of 3 digit no. formed which is divisible by 42,which satisfies a+4b+c are:-
1+4*9+5 -195
2+4*9+4 -294
3+4*9+3 -393
4+4*9+2 -492
5+4*9+1 -591
6+4*9+0 -690
882*
684*
486*
288*
876
678
but none of the given options divide all the numbers.n hence option is( d)

Is this solution Helpfull? Yes (12) | No (5)  

rohitashwa  (10 years ago)

I tried so hard
And got so far
But in the end
It doesn't even matter
...kamino iti mehnat se solve kiya phir submit kiya ..net connection kya gaya!! sara kiya hua bah gaya.. feeling sad :( n so i used to say use broad band..well leave. take no, 126 b=27 and option b out nxt take b=1and put arbitrary value option a n c out remaining d so d would be the answer.... nope check this out b should be answer....

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

Zunaira Jamal  (10 years ago)

But the number 42 is also divisible by 2( as in 2*21=42), then why isn't the answer b-2 ??

Is this solution Helpfull? Yes (3) | No   

saranya sankar  (10 years ago)

ans is 6
because the number divisible by 42 means it is definitely it divided by 6 and 7(as 6*7=42)

Then the number is definitely divided by 6
ans is c

Is this solution Helpfull? Yes (2) | No (7)  

rohitashwa  (10 years ago)

yup 6 .. right ... i thought its c-6 ...

Is this solution Helpfull? Yes (2) | No (3)  

Siddartha Mulumudi  (9 years ago)

I did this way yesterday. I think its correct. given abc is 3digit num and a+4b+c is divisible by 42

Take 3 numbers such that a+4b+c is divisible by 42.
I took b=9, a=1, c=5 so the a+4b+c = 42 which is divisible by 42.
So the number abc is 195.
195 is neither divisible by 4 nor 6,9. If one example doesnot satisfy the condition. then those 3 options are not answers. Hence I thought its
d) none

Is this solution Helpfull? Yes (1) | No   

Srayan Goswami  (10 years ago)

I don't get it... Suppose I take the no. as 8+(4*8)+2 = 882 it is divisible 42 as well as it is divisible by 2 & 6.... please elaborate...
getting confused....

Is this solution Helpfull? Yes | No (1)  

sunil awasthi  (10 years ago)

if a+4b+c is divisible by 7 and 6 tht means c must be even (4,6,8,2)
and if we put c=8 and b can be either 1 or 2 so by hit n trial a=4 the num becomes
448 divided by 7 then c-6=2 and the num is divisible by c-6 hence answer is c

Is this solution Helpfull? Yes | No (1)  

deepak  (9 years ago)

let take a no. 492(abc) now put the value 4+4*9+2==42 divisible by 42 and the no. 492 is also divisible both 2 and 6
so the answer is none of the above..

Is this solution Helpfull? Yes | No   

prince  (8 years ago)

882 is dvisible by 6.. 8+4*8+2=42

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.