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प्रश्न
By re-arranging the given numbers evaluate :
21 + 22 + 23 + 24 + 25 + 75 + 76 + 77 + 78 + 79
उत्तर
21 + 22 + 23 + 24 + 25 + 75 + 76 + 77 + 78 + 79
= (21 + 79) + (22 + 78) + (23 + 77) + (24 + 76) + (25 + 75) (by associative law)
= 100 + 100+ 100+ 100 + 100 = 500
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संबंधित प्रश्न
Fill in the blank:
286 + 0 = ______
Which property of addition is satisfied by :
8 + 7 = 15
Which property of addition is satisfied by :
8 x (8 + 0) = 8 x 8 + 8 x 0
State True or False:
The sum of two even numbers is an even number.
State True or False:
The sum of two even numbers is an odd number.
State True or False:
The sum of an even number and an odd number is odd number.
State True or False:
If x is a whole number then -x is also a whole number.
Find the difference between the largest number of four digits and the smallest number of six digits.
The product of the two numbers is 528. If the product of their unit’s digits is 8 and the product of their ten’s digits is 4; find the numbers.
The greatest number which always divides the product of the predecessor and successor of an odd natural number other than 1, is ______.
