### 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

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

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

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

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

5

Explanation :
No Explanation available for this question

√53824=?

A.  202

B.  232

C.  242

D.  332

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

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

1.633

Explanation :
No Explanation available for this question

The value of log2(log3 625) is

A.  2

B.  5

C.  10

D.   15

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

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

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

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

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

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

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

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

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

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

4

Explanation :
No Explanation available for this question

√7921 *51+374 = (?)3

A.  16

B.  19

C.  15

D.  21

E.  None of these

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

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

27

Explanation :
No Explanation available for this question

(log5 3)X(log3 625) equals

A.  1

B.  2

C.   3

D.  4

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

-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

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

50

Explanation :
No Explanation available for this question

√00004761 equals

A.  0.00069

B.  0.0069

C.  0.0609

D.  0.069

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

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

0

Explanation :
No Explanation available for this question

√571536/42 * ?=5850

A.  420

B.  240

C.  315

D.  325

E.  None of these