Question

In the following questions, the symbols $\delta ,\%,\$,\#$ and @ are used with the following meaning as illustrated below.
${}^{\prime }P\$Q^{\prime }$ means 'P is not smaller than Q'.
${}^{\prime }P@Q^{\prime }$ means 'P is not greater than Q'.
${}^{\prime }P\delta Q^{\prime }$ means 'P is neither smaller than nor equal to Q'.
${}^{\prime }P\#Q^{\prime }$ means 'P is neither greater than nor equal to Q'.
${}^{\prime }P\%Q^{\prime }$ means 'P is neither smaller than nor greater than Q'.
Now, in each of the following questions assuming the given statements to be true, find out which of the two conclusions I and II given is/are definitely true?

Statements: $N\delta K$
$K\#D$
$D\%M$
Conclusions
I. $M\delta K$
II. $D\delta N$

• A. Only conclusion I is true
• B. Only conclusion II is true
• C. Either conclusion I or II is true
• D. Neither conclusion I nor II is true
• E. Both conclusions I and II are true

Answer 1

Answer: (A)

Only conclusion I is true

$P\$Q\Rightarrow P\ge Q$
P @ Q $\Rightarrow P\le Q$
$P\delta Q\Rightarrow P>Q$
$P\%Q\Rightarrow P=Q$
Statements: $N\delta K\Rightarrow N>K$,
$K\#D\Rightarrow K<D$
$D\%M\Rightarrow D=M$
So, $N>K<D=M$
Conclusions
I. $M\delta K\Rightarrow M>K$ (True)
II. $D\delta N\Rightarrow D>N$ (False)