# Aptitude - Squares & Cubes Online Quiz

#### Quantitative Aptitude Course in Tamil

87 Lectures 22.5 hours

Following quiz provides Multiple Choice Questions (MCQs) related to Squares & Cubes. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz. Q 1 - 2592/ √?= 324

A - 144

B - 64

C - 16

D - 8

### Explanation

`Let 2592 /√x= 324 . Then, √x = 2592/324 = 8 ⇒ x= 64`

Q 2 - 248 + √ 52 +√144

A - 14

B - 16

C - 16.6

D - 18.8

### Explanation

`Given exp.= √248  +√52+12  = √248+ √64 = √248+8   =√256 = 16`

Q 3 - (0.324*0.081*4.624)/(1.5625* 0.0289* 72.9* 64) = ?

A - 24

B - 2.4

C - 0.024

D - 0.24

### Explanation

```Sum of decimel places being equal in numerator and denominator, we have
Given Expression =   √324*81*4624/15625*289*729*64
= 18*9*68/125*17*27*8=3/125 =0.024```

Q 4 - √4225-√1225+6 =√?

A - 1156

B - 1296

C - 1444

D - 1600

### Explanation

```√4225-√1225 +6=(65-35+6)=36.
Let  √x=36 .Then x =(36*36)=1296```

Q 5 - if √841 = 29, then √0.00000841 = ?

A - 0.00029

B - 0.0029

C - 0.029

D - 0.29

### Explanation

`√0.00000841 =  √841/100000000 = 29/10000= 0.0029`

Q 6 - If x * √0.0016 = 4 , then the value of x is :

A - 0.04

B - 4

C - 25

D - 100

### Explanation

```√0.0016 =  √16/10000  = 4/100 =0.04
∴ x*0.04 =4 ⇒ x = 4/0.04=  4*100/4 =100```

Q 7 - if √4096=64 , then the value of (√40.96 + √ 0.4096 + √0.004096 + √ 0.00004096) up to two places of decimal is :

A - 7.09

B - 7.10

C - 7.11

D - 7.12

### Explanation

```Given exp . √ 4096/100 +√ 4096/10000+√ 4096/1000000+√ 4096/100000000
=(64/10+ 64/100+64/1000+64/10000)= (6.4+0.64+0.064+0.0064+0.0064)= 7.11```

Q 8 - {(√2-1)2+( √2-1)2/(2-1)]/ [(√3-1)2+ (√3+1)2/(3-1)] = ?

A - 2/3

B - 3/2

C - 4

D - 6

### Explanation

```given Expression =
{(√2-1)2+( √2-1)2/(2-1)]/ [(√3-1)2+ (√3+1)2/(3-1)] =2(2+1)/1*2/2(3+1)= 3/2```

Q 9 - if √3=1.732, then the value of 1/√3 is:

A - 0.617

B - 0.313

C - 0.577

D - 0.173

### Explanation

`1/√3 = 1/√3*√3/√3= 3√3/3 = 1.732/3=   0.577.`

Q 10 - An army general wants to form a solid square from 36562 armies. After arrangement , he found some armies left. How many armies were left ?

A - 36

B - 65

C - 81

D - 97

### Explanation

` 191 * 191 = 36481, ∴ armies left = 36562 - 36481 = 81`

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