How many days did Raju take to complete his assignment?
I. Mohit correctly remembers that Raju took more than $3$ days but less than $9$ days to complete his assignment.
II. Mina correctly remembers that Raju took more than $7$ days but less than $11$ days to complete his assignment.

if the date in statement I alone are sufficient to answer the question, while the date in statement II alone are not sufficient to answer the question

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if the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.

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if the date either in statement I alone or in statement II alone are sufficient to answer the
question

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if the data given in both statements I and II together are not sufficient to answer the question

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if the data in both statements I and II together are necessary to answer the question.

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Solution

The correct option is E if the data in both statements I and II together are necessary to answer the question.
How many days did Raju take to complete his
assignment
(I) Mohit currently remembers that Raju took
more then 3, less then 9
choice Remain, $U_{1} = (4, 5, 6, 7, 8)$
(II) Mina Currently remember that Raju took
mores then 7, but less then 11
Choice Remain $= U_{2} = (8, 9, 10)$
From (I) & (II) set
Common Solution $= 8$
Hence, we Required both the statement to solve
the problem.

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How many days did Raju take to complete his assignment?I. Mohit correctly remembers that Raju took more than 3 days but less than 9 days to complete his assignment.II. Mina correctly remembers that Raju took more than 7 days but less than 11 days to complete his assignment.

How many days did Raju take to complete his assignment?
I. Mohit correctly remembers that Raju took more than $3$ days but less than $9$ days to complete his assignment.
II. Mina correctly remembers that Raju took more than $7$ days but less than $11$ days to complete his assignment.