In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. -
165, 195, 255, 285, 345,
Answer: C. 435
Eacch number is 15 multiplied by a primev number
i.e. 15 * 11, 15 * 13, 15 * 17, 15 * 19, 15 * 23.
.'. Missing term = 15 * 29 = 435.