Question

What number should replace the question mark? 10, 10, 9, 7, 7, ?, 4, 4, 3, 1

Answer 1

Answer:

6 should replace the question mark

Answer 2

Answer: 6 should replace the question mark '?'.

Step-by-step explanation:

10, 10, 9, 7, 7, ?, 4, 4, 3, 1

The given series clearly shows that the first term is 10 and then the next term is 10 and again the next is 9 which means 1 is subtracted from it

Again, the next two terms are 7 which means 2 is substracted and then then '?' then again two 4 and then 3 (1 is subtracted) and then 1 (2 is subtracted).

So, we conclude from the previous analysis that the series is like two repeated terms then the next term is subtracted by 1 then the next term is repeated twice along with a subtraction of 2, and then again the next term is subtracted by 1  and this is iterated.

Thus, after the term '7' the '?' must have been 6 as 1 will be subtracted from it.