What should come in place of the question mark (?) in the given series?3 13 28 48 ? 103

Series: 3, 13, 28, 48, ?, 103

Find the differences:

• 13 − 3 = 10
• 28 − 13 = 15
• 48 − 28 = 20

The differences increase by 5 each time:
10, 15, 20, 25, 30

So, next term = 48 + 25 = 73

Check: 73 + 30 = 103 ✔️

Correct answer: 73