Question Details

300, 299, 295, 286, 270, ?
Find the missing number in the following number series.

Options

A

188

B

245

C

258

D

230

E

None of these

Show Answer

Correct Answer :

Option B

245

Solution :

The correct option is 245.

To find the missing number in the given series, let us analyze the pattern of differences between consecutive terms:

300-299=1
299-295=4
295-286=9
286-270=16

Notice that the differences subtracted at each step are consecutive perfect squares:

1=12
4=22
9=32
16=42

Following this pattern, the next difference to subtract should be the square of 5:

52=25

Now, subtract 25 from the last term (270) to obtain the missing number:

270-25=245

Thus, the missing number in the series is 245.

Unlock Our Free Library

Access expert-curated educational resources and study materials—completely free.

Discover more resources

You may also like

Mock Tests

View All
  • CTET
  • intermediate
  • No time limit
  • child development and pedagogy, mathematics, social science

  • SSC
  • intermediate
  • 2 hours and 30 mins
  • child development and pedagogy, mathematics, social science

Ask AI Tutor
5 left
Q1 View Question & Options
AI Tutor is solving this question...
Reading question context & options...