Number series – extend the pattern by two terms. Sequence: 10, 20, 25, 35, 40, 50, 55, ____ , ____

Introduction / Context:
The sequence alternates between adding 10 and adding 5. Recognizing alternating fixed increments is a common test of series reasoning.

Given Data / Assumptions:

• Given: 10, 20, 25, 35, 40, 50, 55
• Find the next two terms.

Concept / Approach:
Identify the repeating operation: +10, then +5, and so on.

Step-by-Step Solution:

Verification / Alternative check:
The +10, +5 pattern is consistent from the start; applying it forward yields 65, then 70.

Why Other Options Are Wrong:

• 60 70 / 60 75 / 60 65: Insert 60 incorrectly; 55 + 10 is 65, not 60.
• 70 65: Reverses the order and breaks the alternating rule.

Common Pitfalls:
Mixing the order of +10 and +5 or starting the alternation from the wrong point. Follow the step-by-step increments carefully.

Final Answer:
65 70