Elitmus
Exam
Logical Reasoning
Cryptography
CGD
*BQS
---------
OQSC
GOSR
QPOO
---------
DSBRSC
Read Solution (Total 8)
-
- 846 * 753 = 637038
C G D
*B Q S
---------
O Q S C
G O S R
Q P O O
---------
D S B R S C
S+R=S ===>R=0
D=Q+1 and D*Q=R(0) ===> D=6, Q=5
Q+S+O=R(0)
ie, S+O = 5 === S=3 and O=2
by trail and error
B=7, C=8, G=4, P=9
- 10 years agoHelpfull: Yes(14) No(1)
- see in the summation part ie s+r=s it means r=0. now
cgd
* q
----
gosr here r =0 mens either q=5 or d =5... so q=5.
so this is the way after that solve it
846
753
--------
2538
4230
5922
-----
637038
- 10 years agoHelpfull: Yes(3) No(1)
- 846*753
--------
2538
4230-
5922--
---------
632038 - 10 years agoHelpfull: Yes(0) No(0)
- CGD
*BQS
-------------
OQSC
GOSO
QPOO
-----------
DSBRSC
---------
O+S=S =>R=0,9---take R=0, AS there is no carry generated(ie:last term is c)from the last term
again, G*Q=R(ie:0) so now G=2,4,6,8 & Q=5 OR VICE VERSA
BY HIT & TRIAL, taking G=4 & Q=5
C4D
*B5S
-----------
O5SC
4OS0
5POO
--------
DSB0SC
NOW D*5=0 =>D=5+CARRY so D=6
NOW putting the values G=4,Q=5,R=0,D=6, WE WILL GET S=3,C=8,O=2,B=7 &P=9
- 10 years agoHelpfull: Yes(0) No(0)
- hai ANN. pls explain me "trail and error" method step by step. i don't understand
- 10 years agoHelpfull: Yes(0) No(0)
- @ Ann Theressa PLEASE provide me link and tricks where i can learn how to solve cryptarithematic questions...
- 10 years agoHelpfull: Yes(0) No(0)
- In this problem main trick is that R+S=S means that R=0 and S= any number 0 to 9
and then Q * D=R that is 6*5 ,8*5,2*5,4*5 and apply hit trial method then you will get the Q=5 and D=6 after finding value of D, Q you will find easily the value of C,G,Q,B. hence solution of this
( 846*753 ) - 10 years agoHelpfull: Yes(0) No(0)
- 846
753
...........
2538
4230
5922
..............
637038 - 10 years agoHelpfull: Yes(0) No(0)
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