Question

Which is the next term in the series 165, 195, 255, 285, 345, ?

• A. 505
• B. 395
• C. 415
• D. 435

Answer 1

Answer:

D. 435

Each number of the series is 15 multiplied by a prime number, ie 165 = 15 x 11 195 = 15 x 13 225 = 15 x 17 285 = 15 x 19 345 = 15 x 23 Next term = 15 x 29 = 435