self Maths Puzzle

1)b&e are good in mathematics& physiccs 2)a&b are good in art & literature WHO IS GOOD IN PHYSICS?

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self Other Question

if log a/b + log b/a=log(a+b) then a+b is if 1+3+5+7+9+11+13+15+17+19=100,then find out five no.s from the above series which is equal to 50.