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problem to solve


 
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Atult718
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PostPosted: Tue Apr 17, 2007 6:06 am    Post subject: problem to solve Reply with quote
Q: Which of the following is equal to the value of
2^5+2^5+3^5+3^5+3^5

A) 5^6
B) 13^5
C) 2^6+3^6
D) 2^7+3^8
E) 4^5+9^5


what would be the right way to go about this ?
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rajesh_ctm
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PostPosted: Tue Apr 17, 2007 5:15 pm    Post subject: Reply with quote
Simplify it as
a+a+b+b+b
where a=2^5 and b=3^5

So the expression is 2a+3b = 2*2^5+3*3^5 = 2^6+3^6.
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Atult718
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PostPosted: Wed Apr 18, 2007 12:00 am    Post subject: Reply with quote
ohhhhhhhhhh... thanks man... very good explanation.
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