if baba's sis is called pisi(bua) then prove it mata's (mother) sis is called masi.😆
we know,
baba=pita
ma= mata
so, pita er sis =pisi
1 er sis = pisi/pita (unitary method)
so mata er sis = (pi si *ma ta)/ pi ta
= masi(numerator n denominator pi pi n ta ta crossed)
its proved mata's sis is called masi by mathematical term.🤣