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The operation* represents either addition, subtraction, or

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The operation* represents either addition, subtraction, or [#permalink] New post 08 Oct 2006, 09:24
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D
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The operation* represents either addition, subtraction, or multiplication of integers, what is the value of 1*0?

(1) 0*2=2
(2) 2*0=2

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE
is sufficient.
EACH statement ALONE is sufficient
Statements (1) and (2) TOGETHER are NOT sufficient
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 [#permalink] New post 08 Oct 2006, 09:26
D it is

From 1, * = +, Hence 1+0=1

From 2, * = + or -. In either case 1+0 = 1 or 1-0 =1
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 [#permalink] New post 08 Oct 2006, 09:27
The operation* represents either addition, subtraction, or multiplication of integers, what is the value of 1*0?

(1) 0*2=2
(2) 2*0=2

FROM ONE

IT IS ADDITION............SUFF

FROM TWO

IT IS ADDITION OR SUBTRACTION EITHER WAYS VALUE OF 1*0 CAN BE DETERMINED .............SUFF

MY ANSWER IS D
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 [#permalink] New post 08 Oct 2006, 09:30
(D) for me

Stat1:
0*2 = 2
> Is '*' could be 'x' ? 0x2 = 0, no
> Is '*' could be '+' ? 0+2 = 2, yes
> Is '*' could be '-' ? 0+2 = -2, no
Thus, '*' = '+' and 1*0 = 1+0 = 1
SUFF

Stat2:
2*0 = 2
> Is '*' could be 'x' ? 2x0 = 0, no
> Is '*' could be '+' ? 2+0 = 2, yes
> Is '*' could be '-' ? 2-0 = 2, yes
Thus, * = + or - and 1*0 = 1 +/- 0 = 1
SUFF
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 [#permalink] New post 08 Oct 2006, 11:33
D ............... already discussed ......
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 [#permalink] New post 08 Oct 2006, 11:42
can be:
1+0 = 1
1*0 = 0
1-0 = 1

I) 0*2 = 2 sub out & mult out, can only be add SUFF
II) 2*0 = 2 mult out, could be sub or add
1+0 = 1
1-0 = 1

SUFF

D
  [#permalink] 08 Oct 2006, 11:42
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