$60 + (50 + 70) =$

(60 + 50) + 70

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60 + 50 + 70

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50 + (60 + 70)

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All of the above.

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Solution

The correct option is D All of the above.
Even if we change the groupings of the numbers we are adding, the total will always be the same.

In this case, as we can see

When we add options , we get:

Thus, it doesn't matter which 2 numbers we add first, addition of given 3 numbers will be similar.

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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.

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

How many students obtained marks below

40

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

Class Intervals	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$120$	?	$200$	?	$185$
Cumulative Frequency	$120$	?	?	?	$900$

Cumulative Frequency for class

60 - 70 =

Class Intervals	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$
Frequency	$120$	?	$200$	?	$185$
Cumulative Frequency	$120$	?	?	?	$900$

Frequency for class

40 - 50 =

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60+(50+70)=

The correct option is D All of the above.Even if we change the groupings of the numbers we are adding, the total will always be the same. In this case, as we can see When we add options , we get: Thus, it doesn't matter which 2 numbers we add first, addition of given 3 numbers will be similar.

$60 + (50 + 70) =$

The correct option is D All of the above.
Even if we change the groupings of the numbers we are adding, the total will always be the same.

In this case, as we can see

When we add options , we get:

Thus, it doesn't matter which 2 numbers we add first, addition of given 3 numbers will be similar.