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.
