Explanation

1 divided by 1000 equals 0.001.

It represents one-thousandth in decimal form.

Explanation

To evaluate the expression:

2/3 × 1/2 ÷ 1/3

First, multiply 2/3 and 1/2:

(2/3) × (1/2) = 2/6 = 1/3

Then, divide the result by 1/3:

(1/3) ÷ (1/3) = 1

Explanation

6/4 + 2.5 = 0

= 1.5 + 2.5

=  4

ND5-07-2023

Explanation

Total amount: 121

121 - 100 = 21.

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Explanation

A perfect square is a number that is the square of an integer.

Among the options:

√625 = 25

√289 = 17

√441 = 21

√325 ≈ 18.03 → Not an integer

Explanation

According to BODMAS, Division (÷) and Multiplication (×) are done first — from left to right, followed by Addition (+) and Subtraction (-).

So, if division appears before multiplication in the expression, it is done first.

Explanation

To find how long Ahmad takes to solve 3 questions:

Step 1: Time per question

Time per question = 9.8/7 = 1.4 minutes

Step 2: Time for 3 questions

1.4 × 3 = 4.2 minutes

Explanation

Expanded form is writing a number as the sum of the place values of its digits.

For example, 345 would be written as 300 + 40 + 5 in expanded form.

Explanation

An open sentence contains a variable (like x) and becomes either true or false only when a value is assigned.

x < 3 is open because its truth depends on the value of x.

Explanation

The expression (x^2 + 2) / (x^2 + 2x + 2) is an improper fraction.

Because the degree of the numerator is equal to the degree of the denominator.