SPM 2018 Add Maths Paper 1, Question 25
Solved on video in English and Bahasa Melayu · 3 marks · 6:26 video
The question
Diagram 11 shows seven letter cards. Five cards are chosen at random to form a code. Find the probability that the code formed, contains at least 3 consonants are arranged side by side. Give your answer in the simplest fraction form.
[3 marks]
6:26Step 1
Classify the seven letters: 4 consonants (M, N, R, L) and 3 vowels (I, E, A). A code is an ordered arrangement of 5 of the 7 distinct cards.
6 more steps, each with the reason for it, in the full solution
Final answer
2/7
Where students lose marks
Watch out: order matters here, so the total is 7P5 = 2520, not 7C5 = 21.
Watch every step of this question solved on video (6:26), with the reason behind each step and a box that checks your own answer.
No card. Every past-year question on video, in English and BM.
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