Question

Let Booleam operation * is defined as a * b = a + b̅. If m = a * b, then the value of m *  b is:
1. a 
2. m
3. 1
4. a̅ + b

Answer 1

Correct Answer - Option 2 : m

in question we have given

a * b = a+ b̅ 

m = a* b

m * b =?

(a* b) * b

( a+ b̅) * b       // a * b = a+ b̅

(a+ b̅) + b̅      //a + a̅ = a

a + b̅ = a * b = m

Therefore option 2 is correct