Question

How many 3 digits number are there between 99 and 500?

Answer 1

Answer:

Step-by-step explanation:

500-99+1

Answer is 400, hope you understood

Answer 2

Given :

• A.P : 100, 101, 102, ........ 499
• First term (a) = 100
• Common Difference (d) = 1
• Last term (An) = 499

To Find :

We have to find the number of terms (n).

Solution :

We know the formula to calculate the last term.

→ An = a + (n - 1)d

→ 499 = 100 + (n - 1)1

→ 499 - 100 = n - 1

→ 399 = n - 1

→ n = 399 + 1

→ n = 400

∴ Number of terms between 99 and 500 are 400.

$\rule{200}{2}$