NH-5 to IIT(chemistry)

Which of the following statements are true about following reaction H(3)C-Br +NaOH(for statement 1-5)

Which of the following is true about the above reaction?

1)It is an SN-2 reaction.

2)It is endothermic reaction.

3)It is exothermic reaction.

4)It can take place at room temperature.

5)In DMSO rate is about 1,00,000 time greater than in any polar protic solvent.

6)In SN-2 reaction an inversion of (R,S)configuration take place ie if reactant is R,product is for sure S.

7)In SN-2 reaction an inversion of (d,l)configuration take place ie if reactant is l,product is for sure d.

give your answer as product of correct statements for example if 1,2,3 are correct ans=6