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(49∗18)+(24∗84)−(56∗9)21(49∗18)+(24∗84)−(56∗9)/21

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(49∗18)+(24∗84)−(56∗9)21(49∗18)+(24∗84)−(56∗9)/21  [#permalink]

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New post 18 Aug 2018, 11:00
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

92% (02:09) correct 8% (02:23) wrong based on 13 sessions

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\(\frac{(49*18) + (24*84) - (56*9)}{21}\) =

1. 1.14

2. 11.4

3. 114

4. 1,140

5. 11,400

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Re: (49∗18)+(24∗84)−(56∗9)21(49∗18)+(24∗84)−(56∗9)/21  [#permalink]

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New post 18 Aug 2018, 11:05
AkshdeepS wrote:
\(\frac{(49*18) + (24*84) - (56*9)}{21}\) =

1. 1.14

2. 11.4

3. 114

4. 1,140

5. 11,400


\(\frac{(49*18) + (24*84) - (56*9)}{21}\) = \(\frac{21((7*6) + (8*12) - (8*3))}{21}\) = \((7*6) + (8*12) - (8*3) = 42 + 96 - 24 = 114\) (Option C)
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Re: (49∗18)+(24∗84)−(56∗9)21(49∗18)+(24∗84)−(56∗9)/21   [#permalink] 18 Aug 2018, 11:05
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