Explanation

Note: The answer given in the FPSC answer key is (a) but the actual answer is (b)

To simplify the expression (x^(1/2)) * (x^(-1/2)), we can use the rule of exponents:

x^a * x^b = x^(a+b)

Applying this rule, we get:

(x^(1/2)) * (x^(-1/2)) = x^(1/2 + (-1/2)) = x^0

Any number raised to the power of 0 is equal to 1.

Therefore, (x^(1/2)) * (x^(-1/2)) = 1.

Explanation

To calculate the average (or mean) of a data set, you use the formula:

Average=Sum of all values/Number of values​

Given:

• The sum of all 10 values in the data set is 10.
• The number of values is 10.

Using the formula:

Average=10/10​=1

Explanation

Explanation

To solve the equation:

x​/2−x​/4=2

we can start by finding a common denominator for the terms on the left side.

The common denominator for $frac{x}{2}$ and $frac{x}{4}$is 4, so we rewrite the equation as:

$$frac{2x}{4} - frac{x}{4} = 2$$

Now, combine the fractions on the left side:

2x−x​/4=2

This simplifies to:

x/4​=2

Now, multiply both sides by 4 to isolate $x$

$$x = 8$$

Explanation

Note: The answer given in the FPSC answer key is (c) but the actual answer is 512.

Explanation

The sum of the three angles of any triangle, including an isosceles triangle, is always:180∘

Explanation

A pie chart is a way of summarizing a set of nominal data or displaying the different values of a given variable.

Explanation

A cube can be made with equal blocks for length breadth and height.

Let's see, 1*1*1=1 2*2*2=8 3*3*3=27 4*4*4=64.

Oops, larger than 59. So we need only 27 blocks.

That means that we can take away 50-27=23 blocks.

Explanation

Short-term memory, also known as working memory, typically lasts for about 20-30 seconds unless

it is actively rehearsed or encoded into long-term memory.

Explanation

Short-sightedness is caused due to elongation of the eyeball

 It also may result when the curve of the cornea is too steep. 

The messages sent from the retina to the brain are perceived as blurry