50 - -40 - 10- -50-40-10-40-50-10-50-40-1010-50-40-

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Standard X

Mathematics

Associative property

50 + (40 + 10...

Question

50 + (40 + 10) =

50×(40+10)

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40×(50+10)

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(50+40)+10

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10+(50×40)

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Solution

The correct option is C (50+40)+10
According to the associative property, the addition of a set of numbers yields the same result regardless of how the numbers are grouped.
a + (b + c) = (a + b) + c = (a + c) + b

$\Rightarrow$ 50 + (40 + 10) = (50 + 40) + 10
$\Rightarrow$ 50 + 50 = 100 = 90 + 10

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Similar questions

Q. The marks obtained by 40 students of a class are given below: 80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60 and 60.
Construct a frequency distribution table.

The marks obtained by $40$ students of a class are given below :
$80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70,$
$10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,$ $50, 80,$
$60, 70, 40, 50, 60, 90, 60, 40, 40, 60$ , and $60$

How many numbers are less than

35

sec 50 . sin 40 + cose 40 . cosec 50

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50 + (40 + 10) =

The correct option is C (50+40)+10According to the associative property, the addition of a set of numbers yields the same result regardless of how the numbers are grouped. a + (b + c) = (a + b) + c = (a + c) + b ⇒ 50 + (40 + 10) = (50 + 40) + 10 ⇒ 50 + 50 = 100 = 90 + 10

The correct option is C (50+40)+10
According to the associative property, the addition of a set of numbers yields the same result regardless of how the numbers are grouped.
a + (b + c) = (a + b) + c = (a + c) + b

$\Rightarrow$ 50 + (40 + 10) = (50 + 40) + 10
$\Rightarrow$ 50 + 50 = 100 = 90 + 10