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# Aptitude - Surds and Indices - Discussion

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"Time and tide wait for none."
- Alexander Pope
1.

(17)3.5 x (17)? = 178

 [A]. 2.29 [B]. 2.75 [C]. 4.25 [D]. 4.5

Explanation:

Let (17)3.5 x (17)x = 178.

Then, (17)3.5 + x = 178.

3.5 + x = 8

x = (8 - 3.5)

x = 4.5

 Maneesha said: (Mon, Nov 29, 2010 02:03:51 AM) 4(power of 3.5) 17 to the power of x in the value is

 Devika said: (Thu, Jan 20, 2011 11:02:47 AM) How + came in second step?

 Aravindhsvcoe said: (Sat, Aug 13, 2011 03:33:50 PM) a^m+a^n=a^m+n.according this formula sum of LHS power is equal to RHS power.i.e.3.5+4.5 = 8.

 Sid said: (Sat, Feb 25, 2012 09:05:54 AM) (2^n * 6^ m+1 * 2^n+1 * 3^2m)/ (3^-n * 6^2m * 2^4+m)=181398528 then the value of n is?