Aptitude - Square Root and Cube Root - Discussion

Discussion Forum : Square Root and Cube Root - General Questions (Q.No. 5)
5.

If 35 + 125 = 17.88, then what will be the value of 80 + 65 ?

13.41
20.46
21.66
22.35
Answer: Option
Explanation:

35 + 125 = 17.88

35 + 25 x 5 = 17.88

35 + 55 = 17.88

85 = 17.88

5 = 2.235

80 + 65 = 16 x 5 + 65

   = 45 + 65

   = 105 = (10 x 2.235) = 22.35

Discussion:
25 comments Page 3 of 3.

Manoj Kumar said:   1 decade ago
I am not understanding what you have solved explain it again briefly?

Poornamsh said:   1 decade ago
Make square of 3R5 square of 3 = 9 & square of R5 = R5*R5 = 5.

This is the answer and meaning of 3R5.

Nidhi dahiya said:   1 decade ago
Please tell me what is the meaning of 3 root 5? Is it 125, means cube of 5. I am little confused.

Sivajyothi said:   1 decade ago
I don't know how to find roots for long numbers like 34567 can you please tell me that.

M.V.KRISHNA/PALVONCHA said:   1 decade ago
Hello zee.

You are right. But we know R5 value. For higher root values above explanation process is must.


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