Solution

1. 2

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2.1

3. 2;
Second highest number = 746;
746/2 = 373
Third highest number = 519.
Difference = 519 – 373 = 146

4. 4;
519 = 915;
328 = 823;
746 = 647;
495 = 594;
837 = 738;
Lowest number = 594

5. 5;
519 = 951;
328 = 832;
746 = 674;
495 = 549;
837 = 783
Highest number = 951 or 519

6. 5;From I, ‘a’ is a prime number. But a unique value of a is not known, a can be 2, 3, 5, 7……… Hence,
statement I
alone is not sufficient. From II, again a unique value of a
is not known, a can be 2, 4,6…Hence statement II alone is not sufficient. Combining I and II, that ‘a’ is even
and
prime. Hence, I and II together are sufficient to answer
the question.

7. 4; From I and II, we get 2 equation in two variables. But
they are dependent. Thus, eventually we get one equation in two variables, which have infinite solution set.

8. 3; From statement I,
If Karan turns 90° towards his right, he will face South.
So, Rahul is facing North.
From statement II,

9. 2

10. 1; Check option by pick method.
By options
1) W = X < Y <= A = B >= C >= D

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