Find the missing number in the following question.
21
31
15
Find out the correct answer from amongst the four alternative for the unsolved equation . If 12-5=84, 10-5=50, 8-5=24, then 6-5=?
11
30
1
Find out the correct answer from amongst the four alternatives for the unsolved quuation in each question. If 7 x 3 ÷ 8 stands for 80, then 0 ÷ 2 x 9 will stand for what?
90
19
40
