A viral number sequence puzzle challenges players to find the next number in “2, 6, 12, 20, 30, ?”. Test your analytical ...

If you've been spotting the number seven lately, you may be in luck. Whether you've noticed a series of sevens, like 777, or synchronicities involving the digit, you're experiencing what some refer to ...

You will need to be confident with arithmetic sequences and the 𝑛th term rule to understand these other types of sequences. A geometric sequence contains numbers that are multiplied by a certain ...