Quiz
Find the missing term in each of the following series:
1 / 5
Z, X, V, T, R. (…), (…)
O, K
N, M
K, S
P, N
2 / 5
1, 3, 6, 10, ?
12
15
18
21
3 / 5
3, 9, 27, 81, ?
324
243
210
162
4 / 5
1, 6, 15, 2, 45, 66, 91
25
26
27
28
5 / 5
BDF, CFI, DHL, ?
CJM
EIM
EJO
EMI
Your score is
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