First, notice that K + K = 2KG- Unit30 wrote:Hi, I had trouble with this Question from a GMATprep practice exam:
2^5 + 2^5 + 3^5 +3^5 + 3^5 =?
Using the same logic, 2^5 + 2^5 = 2(2^5) = (2^1)(2^5) = 2^6
Similarly, notice that M + M + M = 3M
Using the same logic, 3^5 + 3^5 + 3^5 = 3(3^5) = (3^1)(3^5) = 3^6
So, 2^5 + 2^5 + 3^5 + 3^5 + 3^5 = 2^6 + 3^6
Aside: For some reason, I remember the question differently.
I think it's (2^5 + 2^5)(3^5 + 3^5 + 3^5) = ?
If that's the correct question, then we can evaluate it as follows:
2^5 + 2^5)(3^5 +3^5 + 3^5) = (2^6)(3^6)
= 6^6 [we're using the rule that says (x^n)(y^n) = (xy)^n]
Cheers,
Brent
