Problems And Solutions SEAMO PAPER A 2016

20. Given that

What is the value of ?
(A) 12
(B) 20
(C) 26
(D) 28
(E) None of the above

21. What is the maximum number of slices we can get by making 3 straight cuts? Each slice does not have to be equal in size.

22. A farmer has 17 chickens and rabbits. He counts 52 legs in all. How many chickens does he have?

23. Shaun can walk 60 metres in one minute. Tim can walk 55 metres in one minute. If Tim is 35 metres ahead of Shaun, how many minutes does Shaun take to catch up with Tim?

24. Two circles are friendly if they touch each other like the pair shown below:

How many “friendly pairs” are there in the figure below?

25. There are 5 blue balls, 4 orange balls and 2 yellow balls in a bag. Sheila is blindfolded and starts to take the balls out, one at a time. At least how many balls must she take out so that, for certain, she ends up with 4 balls of the same colour?