# Aptitude - Squares & Cubes Online Quiz

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 - √1296 =(?)2

A - 6

B - 1296

C - 625

D - 36

### Explanation

```Let √1296 = x2, Then ,x2=36
∴  x =√36 = 6```

Q 2 - (√24+√216)/√96= ?

A - 2√6

B - 6√2

C - 2

D - 1/3 √6

### Explanation

```(√24+√216)/√96 = (√4*6 +√36*6)/ √16*6 = (2√6+6√6)/4√6
= 8√6 /4√6 = 2```

Q 3 - if √4ⁿ =1024, then the value of n is:

A - 5

B - 8

C - 10

D - 12

### Explanation

`√4ⁿ=1024  =4⁵⇒4ⁿꜘ2 =4⁵ ⇒ n/2 =5 ⇒ n=10`

Q 4 - √1296/?= ?/2.25

A - 6

B - 7

C - 8

D - 9

### Explanation

```let √1296/x = x/2.25. then, 36/x=x/2.25
∴ x2= (36*225/100)=81
⇒ x=√81= 9```

Q 5 - √0.01+ √0.81+ √1.21 + √0.0009 = ?

A - 2.03

B - 2.1

C - 2.11

D - 2.13

### Explanation

```given exp .=  √1/100+ √81/100 +√121/100 + √9/10000
= (1/10+ 9/10+11/10+3/10) =(0.1+0.9+1.1+0.03)=2.13```

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 - The value of (√80- √112)/(√45- √63) is:

A - 3/4

B - 4/3

C - 16/9

D - 7/4

### Explanation

```(√80-√112/√45-√63)
=√16*5-√16*7/√9*5-√9*7
= (4√5-4√7)/3√5-√7)=   4(√5-√7)/3(√5-√7)= 4/3```

Q 8 - if 1120/ √ p =80 ,Then p =?

A - 14

B - 140

C - 196

D - 225

### Explanation

`1120/ √p= 80 ⇒ √p =1120/80 =14 ⇒ P=(14*14) = 196`

Q 9 - if √3 = 1.732 and √2 = 1.414, then the value of 1/ (√3+√2) is

A - 0.064

B - 0.308

C - 0.318

D - 2.146

### Explanation

```1/(√3+√2)= 1/(√3+√2)*( √3-√2)/( √3-√2)= (√3-√2)/(3-2)
= (√3-√2)= (1.332-1.414)= 0.318```

Q 10 - 1250 oranges were distributed among a group of girls of a class. Each girls got twice as many oranges as the number of girls in that group . The number of the girls was :

A - 25

B - 45

C - 50

D - 100

```let there be x girls in the group. Each girl got 2x oranges.