Question

7,9,15,33,87,?
plz ans

Answer 1

Concept:

The sequence is the concept or pattern of numbers, words, letters, etc. that follow a pattern.

Given:

7, 9, 15, 33, 87, ?

Find:

We are asked to find the next term of the given sequence.

Solution:

We have,

7, 9, 15, 33, 87, ?

Now,

Let, the next term = y

i.e.

7, 9, 15, 33, 87, y

So,

First, find out the pattern followed by the given terms,

i.e.

The difference between the corresponding terms,

i.e.

9 - 7 = 2,

15 - 9 = 6 = 2 × 3,

33 - 15 = 18 = 6 × 3,

87 - 33 = 54 = 18 × 3,

So,

The next term will also follow the same pattern,

i.e.

y - 87 =  54 × 3

y - 87 = 162

y = 162 + 87

y = 249

So,

The next term is 249.

Hence, the next term of the given sequence is 249.

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Answer 2

Given sequence $7, 9, 15, 33, 87, ....$

To find: We need to find the sixth term of the given sequence.

Difference between the second term and first term of the given sequence

$=9-7\\=2$

Difference between the third term and second term of the given sequence

$=15-9\\=6\\=2 \times 3$

Difference between the fourth term and third term of the given sequence

$=33-15\\=18\\=6 \times 3$

Difference between the fifth term and fourth term of the given sequence

$=87-33\\=54\\=18 \times 3$

therefore according to this sequence, we get the sixth term as

$87+54 \times 3\\=87+162\\=249$

therefore, the required term is 249.

To learn more about reasoning from the given link

https://brainly.in/question/6714019

https://brainly.in/question/7071347

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