Fun Maths Riddle: (1001^2 – 999^2)^2 = ?
Have fun with Maths.
Solve the equation and find the answer;
(10012 – 9992)2 = ?
Choose from the answer below;
A. 106
B. 4 x 106
C. 12 x 106
D. 16 x 106
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Answer: Option D.
Explanation to the riddle’s answer:
((1001)^2-(999)^2)^2
Since we know
((a^2)-(b^2))=(a+b)*(a-b)
So, here a=1001 & b=999
((1001)^2 – (999)^2)^2
=((1001+999)*(1001-999))^2
=(2000*2 )^2
=(4000)^2
=(4 x 10^3)^2
=16*(10^6).
So, D is the right answer