If the number is a and learning is b, then:

Mathematics multiplied by mathematics equals learning mathematics.

= & gtab*ab=bab

It can be concluded that the last digit of the product of b*b is the same as b.

The range of deductive b can only be 1, 5, 6.

Classification test takes a = 1, 2,3:

1 1* 1 1= 12 1

2 1*2 1=44 1

3 1*3 1=96 1

15* 15=225

25*25=625

16* 16=256

26*26=676

So there is no suitable value, no solution!