Question 7

# Select the numberthat can replace the question mark (?) in the followingseries.58, 73, 99, 138, 193, ? , 368

Solution

The series follows pattern as,
58 + 15 = 73
73 + (15 + 11 = 26) = 99
99 + (26 + 13 = 39) = 138
138 + (39 + 16 = 55) = 193
193 + (55 + 20 = 75) = 268

268 + (75 + 25 = 100) = 368
$$\therefore$$ The correct answer is option B.