In a random sampling procedure for cube strength of concrete, on sample consists of X number of specimens. These specimens are tested at 28 days and average strength of these X specimens is considered as test result of the sample, provided the individual variation in the strength of specimens is not more than Y percent of the average strenght. the value of X and Y as per IS: 456-2000 are

In a random sampling procedure for cube strength of concrete, on sampl

1.	In a random sampling procedure for cube strength of concrete, on sample consists of X number of specimens. These specimens are tested at 28 days and average strength of these X specimens is considered as test result of the sample, provided the individual variation in the strength of specimens is not more than Y percent of the average strenght. the value of X and Y as per IS: 456-2000 are
A.	4 and 10 respectively
B.	3 and 10 respectively
C.	4 and 15 respectively
D.	3 and 15 respectively
Answer» E.

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