Write a query to fetch values in table test_a that are an

Question

Write a query to fetch values in table test_a that are and not in test_b without using the NOT keyword

 

 

test a table as follows

id

10

20

30

40

50

 

test b table as follows

 10

30

50 

 

i want to write a query   to fetch values in table test a  that are and not in test b without using the NOT keyword

 

for that how can i write the query in sql server