5, 7, 8, 10, 12, 14, 17, 19, ____
A21
B20
C22
D23
Answer:
D. 23
Read Explanation:
Series 1 (1st, 3rd, 5th, 7th terms):
5, 8, 12, 17...
5 + 3 = 8
8 + 4 = 12
12 + 5 = 17
(The increment increases by 1 each time: 3, 4, 5...)
Series 2 (2nd, 4th, 6th, 8th terms):
7, 10, 14, 19...
7 + 3 = 10
10 + 4 = 14
14 + 5 = 19
(The increment also increases by 1 each time: 3, 4, 5...)
Finding the next number:
The next number belongs to Series 1. Following the pattern (+3, +4, +5), the next jump must be +6.
17 + 6 = 23
Final Answer:
The missing number is 23.