Question

In which of the following two sequences, can the next number be obtained by subtracting $10$ from the previous number?

$\begin{array}{cc}50,40,30,20,10& 99,89,79,69,59\\ \text{Sequence 1}& \text{Sequence 2}\end{array}$

• A. Sequence 1
• B. Sequence 2
• C. Both the sequences
• D. None of the sequences

Answer 1

The correct option is C Both the sequences

Sequence 1:
$50–10=40,40–10=30,30–10=20,20–10=10$

So, we subtract $10$ from the previous number to get the next number in this sequence.

Sequence 2:
$99–10=89,89–10=79,79–10=69,69–10=59$

We can obtain the next number in the sequence by subtracting $10$ from the previous number in Sequence $2$ as well.

Therefore, the pattern for both the sequences can be obtained by subtracting $10.$

Hence, Option D is correct.