Question

15,35, 45, 55, 70,x missing number seris
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Answer 1

Answer:

80

Step-by-step explanation:

in 15,35,45,55,70

1. the difference between 15 and 45 is 30....the deference between 45 and 70 is 35....
2. the difference between 30,35 is5
3. inthe same way 35,55 difference 20 ...55 ,80 is25....then 20,25 difference is also 5
4. so answer is 80