21 P4.PA.JM.17092432
Level 3
In a room with a certain number of people, each person shook hands with the rest of the people only once. The total number of handshakes is 78. How many people are there in the room?
3 m
Sum of consecutive W 4 operations
22 P4.PA.JM.17092422
Level 3
The pattern shows how some candles are arranged. How many candles are there in Figure 10?
3 m
Sum of consecutive W 4 operations
23 P4.PA.JM.17092434
Level 3
The figure shows the first 3 triangular patterns which are formed with circles. How many circles are needed to form the 7th triangular pattern?
3 m
Sum of consecutive W 4 operations Table
24 P4.PA.JM.17092416
Level 2
Matchsticks are used to form each figure. Find out the number of matchsticks needed to form Figure 6.
3 m
Times sum of consecutive W 4 operations
25 P4.WN.JM.17102181
Level 2
What is the value of Q?
2 m
W 4 operations

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