Subject :IMO Class : Class 7

Mr Gupta asked two of his students to solve the expression and write the answer on blackboard. Aryan wrote the answer as 3 *a*-^{4}*b*^{5} whereas Ayan wrote the answer as . Who wrote the correct answer?

A Aryan

B Ayan

C Both of them

D None of these

That looks like 3a^4-b^5, not 3a^-4*b^5