Mathematics

Grade-4-

Easy

Question

# What will be the next number in this series of numbers?

107,207, 307, 407, ________.

- 507
- 527
- 517
- 357

Hint:

### We are given a number sequence. The last term in the sequence is missing. We are asked to find the last term. We have to find the rule used to write the number sequence. Using the rule, we can find the missing term.

## The correct answer is: 507

### The given sequence is 107, 207, 307, 407, __

We will subtract the first term from the second term. We will see if we find a constant, which will help us to write all the terms.

207 – 107 = 100

Now, we will add this value to the second term. We will continue the process till we get the last term. If the term matches the given sequence, then our rule is correct.

207 + 100 = 307

307 + 100 = 407

This sequence matches the given sequence. It means the rule used is to add 100.

Now, we will add 100 to the last term to get the missing term. The last term is 407

407 + 100 = 507

The complete sequence is 107, 207, 307, 407, 507

Therefore, the missing term is 507.

For such questions, we should know the basic operations. When the rule used to write the pattern is not mentioned, we have to use all four operations to check the pattern. The operations are addition, subtraction, division, and multiplication.