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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:
All natural numbers are _________
Which property of addition is satisfied by :
23 + (-23) = 0
State True or False:
The sum of an even number and an odd number is odd number.
State True or False:
Commutativity and associativity are properties of addition for natural numbers and whole numbers both.
By re-arranging the given numbers evaluate :
2 x 487 x 50
Solve:
111 ÷ 3 = 37
222 ÷ 6 = 37
333 ÷ 9 = 37
LCM of 10, 15 and 20 is ______.
Natural numbers are not closed under multiplication.
Natural numbers are closed under subtraction.
What is the correct set notation for natural numbers?
