Find the missing number, if a certain rule is followed row-wise or column-wise.
(IMO 2015)
A6
B7
C8
D1
Ans 1:
Class : Class 5
When we see horizontally, 3 â 8 = 24 and 24 â 4 = 6. If we apply the same rule in all the rows, the answer comes as 6. 5 â 4 =20, 20 â 4 = 5. The last row can be written as: 6 â ? = 36, 36 â 4 = 9. So ? = 36 â 6 = 6.
Ans 4:
Class : Class 8
when you look at the boxes column-wise (vertically), you'll find
3+5-=8 (8-2=6)
6+5=11(11-2=9)
so, 8=4=12 (12-2=10)
answer should be 10, but it's not given...