Question

what number should replace the ? mark​

Answer 1

Answer:

HELLO... MATE...

Your answer is 10.

Step-by-step explanation:-

Starting with 1

• 1
• 1+2=3
• 3+3=6
• 6+4=10
• 10+5=15
• 15+6=21
• 21+7=28

Here is ur answer...

Hope it helps uh...

Pls mark it brainliest...