Answer:
109
Step-by-step explanation:
First subtract the ones place and because 0 cant be subtracted by 1 then you have to borrow a 10 from the tens place. Once you do that you have to subtract the tens and then the hundreds to get you and answer of 109.
1,4,9,16,25,36,49
The sequence is basically square numbers
take it step by step
its b
or I think it is