Question
CIVICS > ELECTION_COMMISSION
1) Out of four numbers, the average of first three is 16 and that of the last three is 15. If thel number is 18, then the first number is
A) 22B) 21
C) 24D) 19
View Answer        rrb-se-answer-key-2014-red-question-pape
Answer : 22




shashi shekhar Says on 18/07/2015 03:15:00 pm :

please discus on this question


Anand S Sharma Says on 18/07/2015 06:54:12 pm :

please explain the solution


Anand S Sharma Says on 18/07/2015 06:54:58 pm :

please explain the solution


vishnu Says on 20/07/2015 11:14:39 pm :

12216


vinod kumar Says on 03/08/2015 08:02:21 am :

ans will be 21


Harshit Says on 11/08/2015 04:53:24 pm :

Answer is 21


PANKAJ Says on 17/08/2015 09:53:14 pm :

correct ans is 21 as 1st+2nd+3rd no.= 48 and 2nd+3rd+4th no.=45 subtract 2nd euation from 1st euation we get 1st-4th no.= 3 given 4th no.= 18 then obviously 1st no.= 21


raamu Says on 01/09/2015 01:32:56 pm :

PANKAJ bhai is correct. ans is 21


boitulla Says on 16/04/2016 01:35:01 pm :

yes,,,you r right ans is 21,,,,,,,,


Rahul Says on 16/06/2016 10:51:16 am :

Correct ans21.
How to solve sum of four number (16×3+18)=66. Sum of last three number 15×3=45. First number will be 66-45=21 21is correct answer


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