Two Common doubt ( HELP ME)

@ thank you Rashmi Gandhi mam, mam I need answer for 1 St question

@ thank you Rashmi Gandhi mam, Rashmi mam plse check whether it is correct or not

For an example : Mrs Lakshmi Jain was a salaried person ,after all deductions her total income is RS 10 lakh fifty thousand

She opted new tax regime proposed 23-24

Up to 3 lakh NIL

3 lakh above to 6 lakh 5% ( 15,000)

6 lakh to 9 lakh 10%  60000

9 lakh to 12 lakh 15% 135000

So her total income falls under 9 lakh to 12 lakh

RS  10 lakh fifty thousand- seven lakh=3lakh fifty thousand

Standard deduction 50 thousand

So 350-50= 3lakh

So @ 5% tax slab rate 3lakh*5/100

15thousand tax payable + 4% cess 600 

Iam I right ,plse tell me mam any fault I did plse explain me mam

@ Rashmi gandhi mam could you please explain me