Question

Use mathematical relation between the numbers in the first three stars to find the missing numbers in fourth and fifth stars. Fourth star
Fifth star

• A. $a=42$ and $b=-13$
• B. $a=-13$ and $b=42$
• C. $c=-52$ and $d=-9$
• D. $c=52$ and $d=9$

Answer 1

Answer: (A), (C)

$c=-52$ and $d=-9$

The numbers in the first three stars follows the relation,
For the fourth star W = $-6$ and E = $-7$
As per the relation,

• The number in the top = $\text{W}\times \text{E}=(-6)\times (-7)=42$

$\Rightarrow a=42$

• The number in the bottom = $\text{W}+\text{E}=(-6)+(-7)=-13$

$\Rightarrow b=-13$

For the fifth star W = $-13$ and E = $4$
As per the relation,

• The number in the top = $\text{W}\times \text{E}=(-13)\times \left(4\right)=-52$

$\Rightarrow c=-52$

• The number in the bottom = $\text{W}+\text{E}=(-13)+4=-9$

$\Rightarrow d=-9$