Sequences (Arithmetic and Geometric)
What’s the next number? 4, 8, 12, ___
16
What’s the chance of flipping heads on a coin?
1/2
Find the mean of 4, 6, 8
What is 50% of 100?
50
23 × 4
92
What is the rule? 3, 6, 12, 24...?
x2
A bag has 2 red, 3 blue, and 1 green marble. What’s the chance of pulling out a blue one?
→ Answer: 3/6 or 1/2
What’s the mode? 1, 2, 2, 3, 3, 4, 4
2,3,4 (Trimodal)
What is 25% of 80?
20
123 × 5
615
A sequence starts at 2 and adds 7 each time. What is the 6th term?
37
What’s the probability of rolling a 6 on a standard dice?
1/6
What’s the median? 7, 5,11, 9, 13
9
Zara scored 75% on a test worth 60 marks. What’s her score?
45 marks
242 x 32
7744
If the sequence is 5, 10, 20, 40..., what is the 7th term?
320
A spinner has 4 equal parts: red, blue, green, and yellow. What’s the chance it lands on green or blue?
2/4 or 1/2
Find the range of 15, 20, 25, 30
15
A coat costs 200 CZK and is 25% off. What is the discount and final price?
150 CZK
3456 × 123
425088
The 3rd term in an arithmetic sequence is 15, and the rule is +4. What is the 1st term?
7
You draw one card from a set of 10, and 7 are green. What’s the probability of NOT getting green?
3/10
Mean of 4, 6, 10, 12, 8, 5, 6,2,1
6
170 CZK
12345 x 6789
83,810,205