Aptitude - Surds and Indices - Discussion
Discussion Forum : Surds and Indices - General Questions (Q.No. 1)
1.
(17)3.5 x (17)? = 178
Answer: Option
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
Discussion:
18 comments Page 1 of 2.
Kilama Charles said:
6 months ago
Thanks all for giving an explanation.
(2)
Vaishnavi said:
10 months ago
(17)^3.5 * 17^x = 17^8.
17^x = 17^8/17^3.5,
17^x = 8 - 3.5,
x = 4.5.
17^x = 17^8/17^3.5,
17^x = 8 - 3.5,
x = 4.5.
(3)
Glory said:
3 years ago
Thanks everyone.
(4)
Vijay said:
3 years ago
Yes, A^m * A^n = A^m+n.
(2)
Harry said:
7 years ago
Please explain the calculation of 17^3.5.
(2)
Rishikesh Agrawani said:
8 years ago
Just look at the below simple derivation.
a.a.a.......m times = a^m,
a.a.a.......n times. = a^n,
(a.a.a.......m times).(a.a.a.......n times) = a.a.a......m+n times = a^(m+n).
Now we got,
a^m . a^n = a^(m+n).
Applying the above formula to the given question,
17^3.5 . 17^x = 17^8,
17^(3.5+x) = 17^8,
3.5 + x = 8,
x = 4.5.
a.a.a.......m times = a^m,
a.a.a.......n times. = a^n,
(a.a.a.......m times).(a.a.a.......n times) = a.a.a......m+n times = a^(m+n).
Now we got,
a^m . a^n = a^(m+n).
Applying the above formula to the given question,
17^3.5 . 17^x = 17^8,
17^(3.5+x) = 17^8,
3.5 + x = 8,
x = 4.5.
(4)
Y.mamaki said:
8 years ago
=17^3.5 * 17^*=17^8.
=17^3.5* * =17^8.
=17*= 17^8-3.5.
=17*= 4.5.
Answer =4.5.
=17^3.5* * =17^8.
=17*= 17^8-3.5.
=17*= 4.5.
Answer =4.5.
(1)
Ayovin said:
9 years ago
Simple 8 - 3.5 = 4.5.
Krishnalal Reang said:
10 years ago
I want with explanation and simple solution.
David wainaina said:
1 decade ago
Simple maths you just do 8-3.5 = 4.5.
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