# Quiz Discussion

What number must be added to the expression 16a2 - 12a to make a perfect square ?

Course Name: Quantitative Aptitude

• 1]

9/4

• 2]

11/2

• 3]

13/2

• 4]

16

##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for ?

• 1] 160
• 2] 175
• 3] 180
• 4] 195
• 5] None of these
##### Solution
2
Discuss

Evaluated : $${{9\left| {3 - 5} \right| - 5\left| 4 \right| \div 10} \over { - 3\left( 5 \right) - 2 \times 4 \div 2}}$$

• 1]

9/10

• 2]

-8/17

• 3]

-16/19

• 4]

4/7

##### Solution
3
Discuss

(4 / 5) × ? × (3 / 7) = (16 / 105)

• 1]

8/9

• 2]

5/7

• 3]

4/9

• 4]

3/7

##### Solution
4
Discuss

$$1\frac{3}{4} - 1\frac{1}{5} + 1\frac{5}{8} = ?$$

• 1]

$$2\frac{7}{{40}}$$

• 2]

$$3\frac{7}{{40}}$$

• 3]

$$9\frac{5}{8}$$

• 4]

$$10\frac{7}{8}$$

• 5]

None of these

##### Solution
5
Discuss

The least number that must be subtracted from 63522 to make the result a perfect square is = ?

• 1] 18
• 2] 20
• 3] 24
• 4] 30
##### Solution
6
Discuss

$${ \text{If }}\left[ {4 - \frac{5}{{1 + \frac{1}{{3 + \frac{1}{{2 + \frac{1}{4}}}}}}}} \right]$$  $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$

• 1] 40 minutes
• 2] 45 minutes
• 3] 48 minutes
• 4] 36 minutes
##### Solution
7
Discuss

4848 / 24 * 11 - 222 = ?

• 1]

200

• 2]

2444

• 3]

2000

• 4]

$$115\frac{3}{8}$$

##### Solution
8
Discuss

The value of $$\frac{{{{\left( {x - y} \right)}^3} + {{\left( {y - z} \right)}^3} + {{\left( {z - x} \right)}^3}}}{{{{\left( {{x^2} - {y^2}} \right)}^3} + {{\left( {{y^2} - {z^2}} \right)}^3} + {{\left( {{z^2} - {x^2}} \right)}^3}}}$$       is = ?

• 1]

0

• 2]

1

• 3]

$${\left[ {2\left( {x + y + z} \right)} \right]^{ - 1}}$$

• 4]

$${\left[ {\left( {x + y} \right)\left( {y + z} \right)\left( {z + x} \right)} \right]^{ - 1}}$$

##### Solution
9
Discuss

If $$\left( {x + \frac{1}{x}} \right) = 3,$$    then $$\left( {{x^2} + \frac{1}{{{x^2}}}} \right)$$   is = ?

• 1]

10/3

• 2]

82/9

• 3]

7

• 4]

11

##### Solution
10
Discuss

If $$\sqrt {{ \text{4096}}}$$ = 64, then the value of $$\sqrt {{ \text{40}}{ \text{.96}}}$$   + $$\sqrt {{ \text{0}}{ \text{.4096}}}$$   + $$\sqrt {{ \text{0}}{ \text{.004096}}}$$   + $$\sqrt {{ \text{0}}{ \text{.00004096}}}$$     up to two place of decimals is = ?

• 1] 7.09
• 2] 7.10
• 3] 7.11
• 4] 7.12
# Quiz