Which of the following statement are true ?

1.	Which of the following statement are true ?
Answer» Bridgehead halide are inert for both `S_N1` and `S_N2` reaction. The fist step in both `S_N1` and E1 reaction is same `S_N2` reaction proceed with TOTAL retention of CONFIGURATION . E2 elimination are favoured by weak base Solution :In `S_N2` reaction inversion takes place.

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