Explanation

To determine which number does not possess a square root, examine the options:

525: √525 is not a whole number

900: √900 = 30

81: √81 = 9

9: √9 = 3

Explanation

1 divided by 1000 equals 0.001, which is the decimal representation of the fraction.

Explanation

Ratio of their salary = 9:4

Let salary of A = 9x

and of B = 4x

when salary of A increase we get,

Salary of A = 9x (1 + 15/100) = 5175

9x (115/100) = 5175

9x = 5175 * 100 / 115

9x = 4500

x = 500

So salary of B = 4x

4(500) = 2000

Therefore salary of B is Rs. 2000.

SH28-8-2023

Explanation

Men       Day

10           48

6             x

*****

Men       Day

10           x

6             48

****

6x = 480

x = 80

Explanation

1 square foot = 0.092903 square meters  

Rounded: ≈ 0.09290 sq meter

Explanation

1 yard = 3 feet  

So,  

1 foot = 1 ÷ 3 = 0.333... yards

Explanation

Divide 264 by 12 = 22

Means One book = 22

Multiple 22 by 9 = 198

***

Explanation

313−225=88

Explanation

The given number 0.393939 is a repeating decimal, which can be written as:

0.39 39 39 ...

This is a repeating decimal with a block of 39 repeating indefinitely. To convert this to a fraction, we can use the following steps:

Let x = 0.393939...

Multiply both sides by 100 to get: 100x = 39.3939...

Subtract the original equation from this new equation to get: 99x = 39

Divide both sides by 99 to get: x = 39/99

So, the correct answer is: 39/99

Explanation

Enrolled students=0.15(160)=24

Number of students not enrolled=160−24=136