Help needed

[quote="madsport"]Can someone help make sense of this for me?

The answer is[spoiler] A[/spoiler][/quote]



Well, I'm assuming that because they're different symbols, we're dealing with all different numbers. If that's the case:

1. star= 4.
Because we know that square is less than triangle, we know that the triangle is 3 and the square is 1. Sufficient

2. square= 1.
That doesn't give us anything. The other symbols could be any numbers. Insufficient.

So, it's A

I think the answer is C.

Lets rephrase the equation for ease.

We can write it as
a
+b
= c
In the first case where the total is 4. The options could be 2+2, 0+4, 4+0,1+3,3+1. Well but we know that a <c. We are left with 2 choices now , either it is 0+4, or 1+3. So choice A is insuffcient.

Choice B Says that a=1. By itself this choice would not help us.

But if we combine the 2 now we know the option 0+4 is out since we know a=1. hence the answer is C.

Given Triangle(T) > Square (S)
Since both are POSITIVE DIGITS (so 0 is not included) therefore
T can have values 2,3,4,5,6,7,8,9
and S can have values 1,2,3,4,5,6,7,8


1. star=4

T+S=4

The only values that satisfy this condition are T=3 and S=1.

Therefore sufficient.


2. S=1

T could be anything from 2-9.

Therefore insufficient.


Hence answer A