Aptitude - Surds And Indices

If log10 2=0.3010, then value of log10 25 is

A.  0.6020

B.  1.2040

C.  1.3980

D.  1.5050

View Answer  

Correct Answer :

0.6020



Explanation :
No Explanation available for this question

If 2x = 3√32, then x is equal to :

A.  5

B.  3

C.  3/5

D.  5/3

View Answer  

Correct Answer :

5/3



Explanation :
No Explanation available for this question

√7+√5 / √7 - √5 is equal to

A.  6+√35

B.  6-√35

C.  1

D.  2

View Answer  

Correct Answer :

6+√35



Explanation :
No Explanation available for this question

If 2n – 1 + 2n + 1 = 320, then n is equal to:

A.  6

B.  8

C.  5

D.  7

View Answer  

Correct Answer :

7



Explanation :
No Explanation available for this question

If (√3)5 x 92 = 3n x 3√3, then the value of n is:

A.  2

B.  3

C.  4

D.  5

View Answer  

Correct Answer :

5



Explanation :
No Explanation available for this question

√53824=?

A.  202

B.  232

C.  242

D.  332

View Answer  

Correct Answer :

232



Explanation :
No Explanation available for this question

The values of the numbers 22004 and 52004 are written one after another. How many digits are there in all

A.  4008

B.  2003

C.  2004

D.  None of these

View Answer  

Correct Answer :

None of these



Explanation :
No Explanation available for this question

If √24 = 4.899, the value of √8/3 is

A.  0.544

B.  1.333

C.  1.633

D.  2.666

View Answer  

Correct Answer :

1.633



Explanation :
No Explanation available for this question

The value of log2(log3 625) is

A.  2

B.  5

C.  10

D.   15

View Answer  

Correct Answer :

2



Explanation :
No Explanation available for this question

(logb a X logc b X loga c) is equal to

A.  0

B.  1

C.  abc

D.  a+b+c

View Answer  

Correct Answer :

1



Explanation :
No Explanation available for this question

The value of(1/3 log10 125- 2log10 4+log10 32) is

A.  0

B.  4/5

C.  1

D.  2

View Answer  

Correct Answer :

1



Explanation :
No Explanation available for this question

If √2n = 64, then the value of n is:

A.  2

B.  4

C.  6

D.  12

View Answer  

Correct Answer :

2



Explanation :
No Explanation available for this question

The value of √0.121 is:

A.  0.011

B.  0.11

C.  0.347

D.  1.1

View Answer  

Correct Answer :

0.347



Explanation :
No Explanation available for this question

The square root of (7 + 3√5)(7-3√5) is:

A.  √5

B.  2

C.  4 3√5

D.  3√5

View Answer  

Correct Answer :

2



Explanation :
No Explanation available for this question

If a = 0.1039, then the value of √4a2-4a+1 +3a is 

A.  0.1039

B.  0.2078

C.  1.1039

D.  2.1039

View Answer  

Correct Answer :

1.1039



Explanation :
No Explanation available for this question

(21 .35)2 +(12.25)2 =?

A.  171.4125

B.  605.885

C.  604.085

D.  463.8125

E.  None of these

View Answer  

Correct Answer :

605.885



Explanation :
No Explanation available for this question

If x2-1/x+1=4,  x=?

A.  0

B.  1

C.  Cannot be determined

D.  None of these

View Answer  

Correct Answer :

Cannot be determined



Explanation :
No Explanation available for this question

The value of (log9 27+log8 32) is

A.  7/2

B.  19/6

C.   4

D.   7

View Answer  

Correct Answer :

19/6



Explanation :
No Explanation available for this question

If x2+y2+z2-64/xy-yz-zx=-2and x + y = 3z, then the value of z is:

A.  2

B.  3

C.  4

D.  None of these

View Answer  

Correct Answer :

4



Explanation :
No Explanation available for this question

√7921 *51+374 = (?)3

A.  16

B.  19

C.  15

D.  21

E.  None of these

View Answer  

Correct Answer :

None of these



Explanation :
No Explanation available for this question

If log10 5+ log10 (5x+1)= log10 (x+5)+1, then x is equal to

A.  1

B.  3

C.   5

D.  10

View Answer  

Correct Answer :

3



Explanation :
No Explanation available for this question

If 3x – 3x-1 – 18, then the value of xx is:

A.  3

B.  8

C.  27

D.  216

View Answer  

Correct Answer :

27



Explanation :
No Explanation available for this question

(log5 3)X(log3 625) equals

A.  1

B.  2

C.   3

D.  4

View Answer  

Correct Answer :

4



Explanation :
No Explanation available for this question

The value of log(-1/3) 81 is equal to

A.  -27

B.   -4

C.  -4

D.  27

View Answer  

Correct Answer :

-4



Explanation :
No Explanation available for this question

If pqr = 1, the value of the expression (1/(1 + p + q-1)) + (1/(1 + q + r-1)) + (1/(1 + r + p-1)) is equal to

A.  p + q + r

B.  1/(p + q + r)

C.  1

D.  p-1+ q-1+ r-1

View Answer  

Correct Answer :

1



Explanation :
No Explanation available for this question

If a + b + c = 13, a2 + b2 + c2 = 69, then find ab + bc + ca.

A.  -50

B.  50

C.  69

D.  75

View Answer  

Correct Answer :

50



Explanation :
No Explanation available for this question

√00004761 equals

A.  0.00069

B.  0.0069

C.  0.0609

D.  0.069

View Answer  

Correct Answer :

0.0069



Explanation :
No Explanation available for this question

If log 2=0.30103, the number of digits in 450 is

A.  30

B.   31

C.  100

D.  200

View Answer  

Correct Answer :

31



Explanation :
No Explanation available for this question

[log(a2/bc)+log(b2/ac)+log(c2/ab)] is equal to

A.  0

B.  1

C.   2

D.  abc

View Answer  

Correct Answer :

0



Explanation :
No Explanation available for this question

√571536/42 * ?=5850

A.  420

B.  240

C.  315

D.  325

E.  None of these

View Answer  

Correct Answer :

325



Explanation :
No Explanation available for this question