Given that, a = 2 + ?
Then, 1/a = 2 - ?3 [ by conjugate property ]
Conjugate law is below,
if x = p + ?
then 1/x = p - ?
Apply the law of algebra in above equation.
Now, we have, a
2 + a
-2
= ( a + 1/a )
2 - 2
= ( 2 + ?
3 + 2 - ?
3)
2 - 2
= (4)
2 - 2 = 16 - 2 = 14
.02 =(2/100) x 100% =2%
Let N / 11 = 233
Then, N = 233 x 11 = 2563
? Missing digit is 5.
121012 = 12 x 10084 + 4
? remainder = 4
We have the important relation, More work, More time (days)
? A piece of work can be done in 6 days.
? Three times of work of same type can be done in 6 x 3
= 18 days
? = 750.0003 ÷ 19.999
? ? ? 750 ÷ 20
? ? ? 375 ? 38
Subtract 20, 25, 30, 35, 40, 45 from successive numbers. So 0 is wrong.
NA
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