Quote:
Originally Posted by Amjad Somro
Agreed with Amelia.
ans was 100
>There are 4 numbers, Avg of 1st three is 19 and avg of last three is 20, last no is 22, what is 1st no
A.18 B.19 C.20 D.21
Please solve i think none of the above is ans of that question
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the average of first three is 19 it means that the total should be 57 then divided by 3 the average would be 19 so this can only happen if 18+19+20=57 then average would be 19 as 57 divided by three then there is the second statement of question the average of last three is 20 this would happen only in this sequence
18,19,20.22 so in this sequence 19+20+22=61 and then avg 61/3 this would be approximately 20 in points not exactly
lekin I am sure the most appropriate option in this scenerio would be 18 the first number because if 18 the first then the condition of first three number avg is 19 could be met