Question

please tell answer...

Answer 1

answer is d because in first one 5 is 5 and 5+3 means it is 5-58 in the same way option d is 8-90 here we must add 3 to 8 so we must get 91 ( here 1 is carried to 8 so it becomes 9 ) but answer is 8-90 hence it is wrojg

Answer 2

In this

Each pair has at least 2 even number

But in c) there is only one even number then

Right ans. May be c) -;