? .00059049 =?

Correct Answer: 9

Explanation:

Let , ?1296 / N = N / 2.25
Then, 36/N = N /2.25 or N²= 36 x 225/100
? N = ?(36 x 225) /100 = (6 x 15) / 10 = 9

Correct Answer: 138.75

Explanation:

Given expression = ?15625 + ?15625/100 + ?15625/10000
= (125 + 125/10 + 125/100)
= (125 + 12.5 + 1.25)
= 138.75

Correct Answer: 0.024

Explanation:

Sum of decimal places being equal in Num. and Denom. of given expression
So ,Given expression is equivalent to
?(324 x 81 x 4624) / (15625 x 289 x 729 x 64)
= (18 x 9 x 68) / (125 x 17 x 27 x 8)
= 3/125
= 0.024

Correct Answer: 192

Explanation:

?324/ 1.5 = N / ?256
? 18/1.5 = N/16
? N = (18 x 16) / 1.5 = (18 x 16 x 10) / 15
= 192

Correct Answer: 64

Explanation:

Let 1872/?N = 234.
Then ?N = 1872/234 = 8
? N = 8 x 8 = 64

Correct Answer: 0.3

Explanation:

Given expression = ?0.0009 / ?0.01
= ?0.0009 / 0.0100
= ?9 / 100
= ?9 / ?100
= 3 / 10
= 0.3

Correct Answer: 0.3

Explanation:

Given expression = ?0.01 + 0.08
=?0.09
= 0.3

Correct Answer: 0.94

Explanation:

?0.9 = ?0.90
= ?90/100
= ?90/10
= 9.4/10
= 0.94

Correct Answer: 2

Explanation:

(?24 + ?216) / ?96
= (?4 x 6 + ?36 x 6 ) / ?16 x 6
= 2?6 + 6?6
= 8?6 / 4?6
= 2

Correct Answer: (3 + 2?2)

Explanation:

Exp. = 1 / (?9 - ?8)
= [1 / (?9 - ?8)] x [(?9 + ?8) / (?9 + ?8)]
= (3 + 2?2 ) / (9 - 8)
= (3 + 2?2)