As always, questions combined with the mistake type 3 and 4 are evolving and often given. The below question is recent, which also belongs to the mistake type 4(A) at level of score 50-51. You should be able to solve this type of question and know the relation between method of approach to variables and the mistake types.
(ex 1) If x and y are different prime numbers, and n is a positive integer, what is the factors’ number of x(y^n)?
1) xy=21
2) n=2
Answer:B
The answer isC but alsoB ,
...
(ex 1) If x and y are different prime numbers, and n is a positive integer, what is the factors’ number of x(y^n)?
1) xy=21
2) n=2
Answer:B
The answer isC but alsoB ,
...
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