Question

Complete the series:_________ , 150, 183, 219, 258.

• A. 120
• B. 148
• C. 361
• D. 247

Answer 1

Answer:

A. 120

Find the pattern in differences:

• 183 − 150 = 33

• 219 − 183 = 36

• 258 − 219 = 39

Differences increase by 3.

So the previous difference should be:

33 − 3 = 30

Therefore, missing number:

150 − 30 = 120

So, the answer is 120.