Which of the foll will be a multiple of 49? options are s^2*t^2 , s^4 , s^2*t , etc The answer i got was (s^2)*(t^2). n is a multiple of 7 and so s^2*t=7k, where k is some integer. since 7 is prime, s^2 cant be 7, so t should be 7 or its multiple. let us assume t was 7. 7k = s^2*t multiplying both sides by 7 49k = s^2*t*7 since we have assumed t to be 7, it becomes 49k = s^2*t^2 If t was not assum