1. Good post? |

If x and y are prime numbers greater than 10 then which of the following is an even integer?
A. x^2*y2
B. x^y +2
C. xy +2
D. 2xy +xy

If there are 33 balls arranged in 7 boxes which of the following is true.
(i) At least one box has more than 5
(ii) There are more than one boxes with 4
(iii) There is at least one box empty
A. I only
B. ii only
C. i and ii
D. i and iii
E. None

2. Good post? |
1. A is not clear but B,C,D can be eliminated
2. E none.

3. Good post? |
If x and y are prime numbers greater than 10 then which of the following is an even integer?
A. x^2*y2
B. x^y +2
C. xy +2
D. 2xy +xy

If there are 33 balls arranged in 7 boxes which of the following is true.
(i) At least one box has more than 5
(ii) There are more than one boxes with 4
(iii) There is at least one box empty
A. I only
B. ii only
C. i and ii
D. i and iii

E. None
1. All primes > 10 are odd... hence x^y is odd... ie x^y+2 is by odd... xy + 2 is also odd cos odd*odd is odd... 2xy is even.. 2xy+xy is even + odd... ie odd... eliminating all other options... A

2. E

4. Good post? |
Uh.. I beg to differ on the 2nd question...
I feel the answer is (A)...

Here's the explanation :
Ans: (A) - (i) only
Why?
(ii)- > Wrong -> Why? One scenario -> 1 1 1 1 1 1 27 -> Here only one box has more than 4, so, statement '(ii) there are more than one boxes with 4' is wrong!
(iii)- > Wrong -> Why? One scenario -> 1 1 1 1 1 1 27 -> In this scenario, there's not even a single box empty. So, statement '(iii) there is atleast one box empty' is also wrong.
Only (i) can be true!
So ans : (A)

5. Good post? |
5 5 5 5 5 5 3 eliminates I, II, III... E

6. Good post? |
Originally Posted by chestnut.cc
5 5 5 5 5 5 3 eliminates I, II, III... E
Oh Ok. Got the point!

7. Good post? |
I dunno but please correct me if m wrong
it says Atleast 1 box has more than 5
this means 1 or 2 or 3 or....or 7 contains 5
and 5 5 5 5 5 5 3 this tells that there are 6 box which contains 5 so the statement should be truei mean 1 shud be true and ans shud be A

8. Good post? |
says "at least one box has more than 5", not "more than one box has at least 5". so A need not be true.

9. Good post? |
Originally Posted by Achillies
I dunno but please correct me if m wrong
it says Atleast 1 box has more than 5
this means 1 or 2 or 3 or....or 7 contains 5
and 5 5 5 5 5 5 3 this tells that there are 6 box which contains 5 so the statement should be truei mean 1 shud be true and ans shud be A
Oh yeah, I was also confused in the same way!

Originally Posted by e.cartman
says "at least one box has more than 5", not "more than one box has at least 5". so A need not be true.

10. Good post? |
Originally Posted by Achillies
If x and y are prime numbers greater than 10 then which of the following is an even integer?
A. x^2*y2
B. x^y +2
C. xy +2
D. 2xy +xy
Is part A supposed to read x^2 * 2y instead of y2 (which I took to mean y-squared). Because otherwise, you're multiplying two odd numbers, which gives an odd answer...

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