Question

Find the missing number in
this pattern..

Answer 1

Answer:

$? = \frac{143}{14 }$

As, In first row; 42÷21×11=22

In third row; 162÷18×11=99

||ly, in second row;

78 ÷ ? = x × 11 = 84

Then 11x = 84, i.e., x = 84/11

To find the value of ? here, we divide 78 by x = 84/11

Therefore, ? = 78 ÷ (84/11)

? = 143/14

Verification:

78 ÷ (143/14) = 84/11 × 11 = 84

Answer 2

Answer:

$\frac{143}{14}$

Step-by-step explanation:

In the first row,

We see 42 has been divided by 21 and the result has been multiplied with 11.

42/21=2

2*11=22

In the third row,

Similarly, 162 has been divided by 18 to get 9 and thus 9 has been multiplied with 11 to get 99.

162/18=9

9*11=99

Following the same pattern in the second row, we may solve it in the same way:

$\frac{78}{y}*11=84\\\\858=84y$                             (Let y be the unknown number)

$\\y=\frac{858}{84} \\\\y=\frac{143}{14}$

y=10.214