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प्रश्न
By re-arranging the given numbers evaluate :
21 + 22 + 23 + 24 + 25 + 75 + 76 + 77 + 78 + 79
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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:
54 + 234 = 234 + ______
Which property of addition is satisfied by :
3+ (5 + 4) = (3 + 5)+ 4
State True or False:
The sum of an even number and an odd number is odd number.
State True or False:
Every natural number is a whole number.
State True or False:
Commutativity and associativity are properties of addition for natural numbers and whole numbers both.
Evaluate using properties :
333 x 987 + 13 x 3333
Complete the following magic squares:
| 4 | _______ | 8 |
| _______ | 7 | ________ |
| _______ | _______ | 10 |
Of the given two natural numbers, the one having more digits is greater.
Two numbers having only 1 as a common factor are called _____ numbers.
To ensure the result is an odd natural number, n (a natural number) must be used in which form?
