Problems And Answers PHIMO MOCK 2020 PRIMARY 5

6. On his first four quizzes, Shania earned a 14, 19, 18, and 15. (A perfect score would have been 20 points.) What does she need to earn on the next quiz to have an average score of at least 17?

(a) 14
(b) 16
(c) 17
(d) 19

7. Find the minimum value of \(n\) such that

\(1 + 2 + 3 + … + n > 500\)

(a) 30
(b) 31
(c) 32
(d) 33

8. Determine the area of a triangle whose side lengths are 28 units, 45 units and 53 units.

(a) 330
(b) 630
(c) 660
(d) 1260

9. Determine the units digit of \((17)^{{17}^3}\)
(a) 1
(b) 3
(c) 7
(d) 9

10. How many ways are there to arrange 3 boys and 3 girls to sit around a circular table?

(a) 24
(b) 120
(c) 720
(d) 5040