Explanation

The fare for 18 kg over 12 km is calculated as follows:

Fare per kg per km = 24 / (12 × 36) = 1/18

For 18 kg over 12 km:

Fare = 18 × 12 × (1/18) = 12 rupees

Explanation

The transitive property states that if a < b and b < c, then a < c.

This property shows how inequality (or equality) carries over through a middle term.

Explanation

Any non-zero number raised to the power of 0 equals 1.

So, 10⁰ = 1.

Explanation

The set-builder form A = {x | x ∈ ℤ ∧ x² = 25} means x is an integer whose square is 25.

The integers satisfying this are x = -5 and x = 5, so A = {-5, 5}.

Explanation

Natural numbers are counting numbers starting from 1, 2, 3, 4...

Explanation

5/2 is a real number (a rational number), as it can be written as a finite decimal (2.5).

Explanation

To solve for x:

9x - 3 = 15

Add 3 to both sides:

9x = 18

Divide by 9:

x = 2

Now, substitute x into the second equation:

3x - 1 = 3(2) - 1

= 6 - 1

= 5

Explanation

(+5) - (+7) = 5 - 7 = -2

Subtracting a larger positive number from a smaller one gives a negative result.

Explanation

8×2=8+2+82=10+4= 14

Explanation

One trillion equals a thousand billion or million millions

1 trillion consists of 1 followed by 12 zeros,

that is, 1, 000, 000,000, 000

and can be written as (10^{12} ) 

 It takes about 32,000 years to finish 1 trillion seconds.

ND28-4-2023