The value of ? 0.121 is?

Correct Answer: 0.252

Explanation:

?0.064 = ?0.0640
= ?640/10000
= ?640 / 100
= 25.2/100
= 0.252.

Correct Answer: 0.63

Explanation:

Exp. = ?0.16 / 0.40
= ?16 / 40
= ?4 / 10
= ?0.4
= ?0.40
= ?40 / 100
= ?40 / 10
= 6.3 / 10
= 0.63

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)

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: 0.94

Explanation:

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

Correct Answer: .03

Explanation:

(.000027)^1/3
= (27 / 1000000)^1/3
= (3³)^1/3 / (10⁶)^1/3
= 3 / 100
= .03

Correct Answer: 42

Explanation:

74088 = 2 x 2 x 2 x 3 x 3 x 3 x 7 x 7 x 7
= (2x2) x (3x3) x (7x7) x (2x3x7)
Least number which should be multiplied to 74088 to make it a Perfect square = 2 x 3 x 7 = 42

Correct Answer: 16

Explanation:

?248 + ?(52 + ?144)
= ?248 + ?(52 + 12)
=?248 + ?64
= ?248 + 8
= ?256
= 16

Correct Answer: 15

Explanation:

?176 + ?2401
= ?176 + 49
= ?225 = 15

Correct Answer: 2

Explanation:

(?32 + ?48) / (?8 + ?12)
= (?16 x 2 + ?16 x 3) / (?4 x 2 + ?4 x 3)
= (4?2 + 4?3) / (2?2 + 2?3)
= 4(?2 + ?3) / 2(?2 + ?3 ) = 2