Find Q in the addition 3 1 Q+ 1 Q 3 5 0 1
1
4
5
8
Study the addition in the ones column: Q + 3 = 1, a number whose ones digit is 1.
If Q = 8, then 8 + 3 = 11. So, the puzzle can be solved as shown below: 3 1 8+ 1 8 3 5 0 1 Hence, Q = 8
Find A and B. [3 MARKS] 2 A B+ A B 1 B 1 8
Find the mode of the given data.
Class Frequency 0−52005−1025010−1522515−2030020−25275
Find A and B A 1+ 1 B B 0 [2 MARKS]