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SHYAM LAL

· started a discussion

· 1 Months ago

Wrong Question (Question: 146315.0 )

Wrong Question

Question:
DIRECTIONS: What should come in place of the question mark (?) in the following question?
\(\cfrac{3}{19}\) of 30% of 3420 = (?)2 × 2
Options:
A) (81)2
B) 7
C) 9
D) 81
E) 49
Solution:

Ans: (c)

3420 × \(\cfrac{30}{100}\) × \(\cfrac{3}{19}\)= (?)2 × 2

⇒ 162 = (?)2 × 2

⇒ (?)2 = \(\cfrac{162}{2}\) = 81

⇒ ?= \(\sqrt[]{81}\) = 9

Knowledge Expert

· commented

· 1 Months ago

3/19 of 30% of 3420 = (?)^2 × 2

so, ?=9
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