Question

UJ
3, 7, 15, 31, 63, ?
(a) 126
(b) 125
(d) 127
(e) 165
(c) 129​

Answer 1

Required Answer:-

Here we have a number series. Let's see the logic that is working in order to get the next term$.$

Logic:

• Multiply the term with 2.
• Then add 1.
• We will get the next term.

Like here:

• 3 × 2 + 1 = 7
• 7 × 2 + 1 = 15
• 15 × 2 + 1 = 31
• 31 × 2 + 1 = 63

Then, 63 × 2 + 1 = 127 (D)

Learn more:

1) Here we have a number series. Find the next term of the series 86,48,32....?

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2) Another number series. Find the next term 15,29,56,108,205,400,....?

➙ https://brainly.in/question/1085041

Answer 2

Answer:

Required Answer :-

What is the logic in it?

The logic in it is

• Firstly the number is multiplied by 2
• Then added 1 to the number

$\sf \: 3 \times 2 + 1 = 7$

$\sf \: 7 \times 2 + 1 = 15$

$\sf \: 15 \times 2 + 1 = 31$

$\sf \: 31 \times 2 + 1 = 63$

${\bold {\sf \: 63 \times 2 + 1 = 127}}$

Hence :-

Option D