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4.Average
medium
The average of four consecutive odd numbers is $40 .$ What is the largest number?
A
$42$
B
$45$
C
$43$
D
$44$
Solution
Average of Middle $2$ terms $=40$
$\frac{x+x+2}{2}=40$
$2 x+2=80$
$2 x=78$
$x=39$
Second term is $39$
largest term is $39+4=43$
Standard 13
Quantitative Aptitude