Elitmus
Exam
Logical Reasoning
Cryptography
B O W
M E N
-------------------
E S D D
O D M A
D E M B
----------------
M A D A D D
Read Solution (Total 9)
-
- gys in this type question. take these step as granted:::
1)check N*W=D
E*W=A
M*W=B
now you have to look for magic number 5 or 6.....
as you know 5*even digit=___0(at unit place)
5*odd digit=___5(at unit place)
2) but here you will get hint from D+A=D.....what can you think from this....
A=0 or A=9(but here this is not possible since no carry will come from previous term) so A=0;;
3)now you have to go to step at 1 put A=0 and check how this digit can come so we can see it from E*W=A.....this implied that A=0 possible only if any one digit is 5......put w=5...but problem from this is
N*W=D if W=5 then if N is even then D will be 0....but not possible...since A is 0.....like wise check it for following product...
E*W=A
M*W=B
so we find that E=5
3)in these Q. you have to consider how digit are behaving in ADD operator...
like in this question O+E(5)=A(0)....what could be possible for
O..4 (if carry come) or 5(not possible it os already assigned to other digit variable) so O=4.....
like wise you have to think ypu will get
846
357
-----
5922
4230
2538
-----
302022 - 11 years agoHelpfull: Yes(26) No(0)
- 846
357
-----
5922
4230
2538
-----
302022 - 11 years agoHelpfull: Yes(6) No(0)
- A should be 0(zero) and therefore E should be 5;
coz E*W=A,
then 5*W=0(zero)
then A=zero and W should be even.(W=2,4,6,8)
now use trial and error method.
and meanwhile check (0)+E=A
As W.K.T. A=zero,
i.e. carry(1)+(0)+5=0
so, (0) value=4;
then take carry(1)+D=M;
and by using these clues we can find that
846*357
-----------------
302022
----------------- - 11 years agoHelpfull: Yes(3) No(0)
- A should be 0(zero) and therefore E should be 5;
coz E*W=A,
then 5*W=0(zero)
then A=zero and W should be even.(W=2,4,6,8)
now use trial and error method.
and meanwhile check (0)+E=A
As W.K.T. A=zero,
i.e. carry(1)+(0)+5=0
so, (0) value=4;
then take carry(1)+D=M;
and by using these clues we can find that
846*357
-----------------
502022
----------------- - 11 years agoHelpfull: Yes(1) No(0)
- pls i need more explanation about this multiplication . i'm keep on learning this but i couldn't understand . we're guessing and allocating the numbers to variables ?
- 11 years agoHelpfull: Yes(1) No(0)
- i solve this and got the same answer.
- 11 years agoHelpfull: Yes(0) No(0)
- how can u(JITENDRA,K.arun) conclude O=4, as input carry for O+E may also be 2,,i.e. 2+O+E=A(0)..plz help me understand that.
- 11 years agoHelpfull: Yes(0) No(0)
- Its 846*357
- 10 years agoHelpfull: Yes(0) No(0)
- the ans is 846 *347
- 10 years agoHelpfull: Yes(0) No(1)
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