Question

The first term of the sequence is 10 and the term to term rule is multiply by 2 and subtract by 5 .

Manish says that, after the first term , every term of this sequence has a units digit of 5
Explain why he is correct ?​

Answer 1

the sequence is

10,(10*2)-5

10,20-5

10,15

similarly

10,15,25,45,85,165

it is proved that statement is correct