Hello Manisha,
Dekho question main 5*8 , ka answer 13 de rakha hai. Yaani 5 ko inhone 8 ke saath add kiya hai, jisse 13 aayega. Thik vaise hi 7*9 = 16 aayega. Jaise ki 7+9=16 . Isi prakar, 3*7 kya aayega.
Ye hoga 3+7 yaani ki 10 aayega.
Iska answer 10 aayega.
I hope your question has been answered properly.
All the best!
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