Question

plz plPlzplzplzplzplPlztell me answer​

Answer 1

Answer:

81

Step-by-step explanation:

freind it's an easy question

first we add 8 to1 then 8x2+9=25 so in this manner we do it all

Answer 2

Answer:

7) 184 (b)

8) 81 (d)

Step-by-step explanation:

7) Given sequence,

1, 3, 8, 19, 42, 89......

Here in this sequence, there is a pattern which is being

3 = 1 x 2 + 1

8 = 3 x 2 + 2

19 = 8 x 2 + 3

42 = 19 x 2 + 4

89 = 42 x 2 + 5

The general equation of the nth term of the given sequence is,

$\rm t_n = t_{n-1} \times 2 + (n-1)$

Here we have to find the next term which is the 7th term of the sequence,

Applying the above equation,

$\rm t_7 = t_6 \times 2 + (7-1)$

Here the $\rm t_6$ = 89

Therefore,

$\rm t_7 = 89 \times 2 + 6 = 184$

8) Given sequence,

1, 9, 25, 49, ?, 121

In this sequence,

The terms are the squares of odd numbers

We can write the sequence as,

$\rm 1^2, 3^2, 5^2, 7^2, ?, 11^2$

Here the next odd number after 7 is 9

Therefore,

The next term is $9^2$ = 81