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SEAMO 2026 Paper A SET 2 – Self-practice

Question 1

How many triangles are there in the figure below?

Question illustration
  1. 2
  2. 4
  3. 6
  4. 10
  5. 12

Question 2

Find the next number in the sequence.

$1,5,6,11,17,28,45,(\quad),\ldots$
  1. 63
  2. 64
  3. 73
  4. 75
  5. None of the above

Question 3

Evaluate the following.

$28+30+32+34+36-(27+29+31+33+35)$
  1. 3
  2. 5
  3. 7
  4. 9
  5. 11

Question 4

Given that:

$$\begin{aligned}\odot+\triangle+\boxdot&=12\\\odot\times\triangle&=12\\\triangle+1&=\boxdot\end{aligned}$$

Find the value of $\odot$.
  1. 2
  2. 3
  3. 4
  4. 5
  5. 6

Question 5

How many cubes are there in the figure below?

Question illustration
  1. 12
  2. 13
  3. 14
  4. 15
  5. None of the above

Question 6

A farmer bought 37 ducks and geese. There were 35 more ducks than geese. If the farmer wants the number of ducks to be twice the number of geese, how many geese should he buy?
  1. 2
  2. 7
  3. 17
  4. 18
  5. None of the above

Question 7

Tom has to paint a 46 m long fence. On the 1st day, he paints 10 m of it. Each day after that, he paints 1 m less than the day before. How many days does it take him to finish painting the fence?
  1. 4
  2. 5
  3. 6
  4. 7
  5. 8

Question 8

How many ways are there to spell the word “SUGAR”?

Question illustration
  1. 3
  2. 5
  3. 6
  4. 9
  5. 10

Question 9

There are 7 red, 9 white and 3 black balls in a box. What is the minimum number of balls you have to take out to ensure you have at least 1 white ball?
  1. 9
  2. 10
  3. 11
  4. 12
  5. 13

Question 10

While queuing for the latest iPhone, Cassie realizes she is the 12th person from the front and 5th from the back. How many people are in the queue?

Question illustration
  1. 16
  2. 17
  3. 18
  4. 19
  5. 20

Question 11

Find the missing number in the number puzzle below.

Question illustration
  1. 8
  2. 13
  3. 14
  4. 17
  5. 28

Question 12

8 years ago, I was twice as old as my brother. If my brother is now 14, how old am I now?
  1. 18
  2. 20
  3. 22
  4. 24
  5. None of the above

Question 13

Given that:

$$\begin{array}{rrr}&A&B\\&A&B\\+&A&B\\\hline1&6&8\end{array}$$

What is the value of A?
  1. 3
  2. 4
  3. 5
  4. 6
  5. None of the above

Question 14

Given that $\boxtimes$, $\odot$, $\triangle$ and $\ast$ are all 1-digit numbers and

$$\begin{aligned}\boxtimes\times3&=\odot\\\odot\times2&=\triangle\\\triangle\times\ast&=24\end{aligned}$$

Find the value of $\boxtimes$.
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Question 15

A number pyramid is shown below. Evaluate $a+b+c+d$.

Question illustration
  1. 15
  2. 20
  3. 25
  4. 30
  5. 35

Question 16

There are 20 chickens and cows altogether on a farm. The farmer counts 48 legs from both chickens and cows. How many more chickens than cows are there?
  1. 8
  2. 9
  3. 10
  4. 11
  5. 12

Question 17

What is the 30th number in the number pattern below?

$1,4,7,9,1,4,7,9,1,4,\ldots$
  1. 1
  2. 4
  3. 7
  4. 9
  5. None of the above

Question 18

Jim bought 3 erasers and 4 pens for 5.35 dollars. Pam bought 1 eraser and 2 pens for 2.35 dollars. How much did 1 eraser and 1 pen cost?
  1. 1.35 dollars
  2. 1.40 dollars
  3. 1.50 dollars
  4. 1.80 dollars
  5. None of the above

Question 19

A new operation is defined as:

$$\begin{aligned}2\odot4&=12\\3\odot5&=16\\2\odot8&=20\end{aligned}$$

Find the value of $6\odot9$.
  1. 10
  2. 15
  3. 20
  4. 25
  5. 30

Question 20

The digits 2, 5 and 8 can be used to form 6 different 2-digit numbers such as 25, 28, ... What is the difference between the smallest and largest numbers that can be formed?
  1. 42
  2. 44
  3. 48
  4. 60
  5. None of the above