Answer:
2
Step-by-step explanation:
Mean of first five natural numbers = sum of first 5 natural numbers ÷ 5
= (1 + 2 + 3 + 4 + 5)÷ 5
= 15 ÷ 5
= 3
1. x= -5
2. x= 12
3. x= 49
4. r= or 2.792
5. s= 6