How many numbers are there BETWEEN 500 and 1000? (Needed for a probability question)

### Asked by drhimasingh | 9th Mar, 2020, 11:06: AM

Expert Answer:

###
Directly, you can say the total number of natural numbers between 500 and 1000 are 501.
**Method:**
500, 501, 502, .... 1000.
Since the difference between the two consecutive numbers are same.
This is an A.P.
Here, a = 500, d = 1 and a_{n} = 1000.
a_{n} = a + (n - 1)d
→ 1000 = 500 + (n - 1)1
→ 500 = n - 1
→ n = 501

**Method:**

_{n}= 1000.

_{n}= a + (n - 1)d

### Answered by Yasmeen Khan | 9th Mar, 2020, 11:37: AM

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