Question

find the missing term in the series given below 26,312,420,?,642,756,872​

Answer 1

Answer:

Now, 3x

2

+x+5⩾0

This is because b

2

−4ac=1−4×5×3

=−59 (roots are imaginary)

3x

2

+x+5=(x−3)

2

=x

2

+9−6x and x−3⩾0

2x

2

+7x−4=0

2x

2

+8x−x−4=0

2x(x+4)−1(x+4)=0

(2x−1)(x+4)=0

x=

2

1

and−4 but x≥3

∴ No solution

Answer 2

Given:

206,312,420,?,642,756,872​

To Find:

Find the missing term

Solution:

We have to find the missing term in the given series, first, we need to find the pattern in the given series. To find the pattern in the series we can try different functions like addition, subtraction, multiplication, squares, roots, cubes and many more and even the combination of these actions.

In the given series we can see that,

312-206=106

420-312=108

756-642=114

872-756=114

the difference 106 from is increasing by 2 for every consecutive term, so the missing term will be

420+110=530

Hence, the missing term in the series is 530.