If in a code language, 34687 is written as 43778, how will 47592 be written in that code language ?

Correct Answer: (A) 56683

The encoding follows an alternating digit shift of (+1, -1, +1, -1, +1): for 34687, $3(+1)=4, 4(-1)=3, 6(+1)=7, 8(-1)=7, 7(+1)=8$, giving 43778. Applying this exact sequence to 47592 gives $4(+1)=5, 7(-1)=6, 5(+1)=6, 9(-1)=8, 2(+1)=3$, resulting in 56683.