Question

Please solve all with explanation
(I know the answer but don't know
explanation)

don't spam you will be report​

Answer 1

I know these answers but according to reasoning I will tell.

in first question 8*2=16 so 15*2=30,

in second question there is two answer first 4*4=16 so 9*9=81 or 9*4=36 on of them is answer

in four answer 11*12=132 so 7*12=84 or 7*8=56.

ek question k do answer hai wo isliye kyoki second me agar 4 ki 4 se Guna kre waise hi 9 ki 9 se ya fir 9 ki 4 se is trh se do answer hai. please tell me aapko smjhbaaya ya nhi agar nhi to m again solve krke btaugi or agr wrong ho to bhi please bataiye